diff --git a/src/Standards/Generic/Sniffs/PHP/DeclareStrictTypesSniff.php b/src/Standards/Generic/Sniffs/PHP/DeclareStrictTypesSniff.php
new file mode 100644
index 0000000000..1bb3a5970c
--- /dev/null
+++ b/src/Standards/Generic/Sniffs/PHP/DeclareStrictTypesSniff.php
@@ -0,0 +1,394 @@
+<?php
+/**
+ * Checks that strict types are declared in the PHP file.
+ *
+ * @author    Michał Bundyra <contact@webimpress.com>
+ * @copyright 2006-2019 Squiz Pty Ltd (ABN 77 084 670 600)
+ * @license   https://github.com/squizlabs/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
+ */
+
+namespace PHP_CodeSniffer\Standards\Generic\Sniffs\PHP;
+
+use PHP_CodeSniffer\Sniffs\Sniff;
+use PHP_CodeSniffer\Files\File;
+use PHP_CodeSniffer\Util\Tokens;
+
+class DeclareStrictTypesSniff implements Sniff
+{
+    /**
+     * How declaration should be formatted.
+     *
+     * @var string
+     */
+    private $format = 'declare(strict_types=1);';
+
+    /**
+     * Number of blank lines before declaration.
+     *
+     * @var integer
+     */
+    public $spacingBefore = 1;
+
+    /**
+     * Number of blank lines after declaration.
+     *
+     * @var integer
+     */
+    public $spacingAfter = 1;
+
+
+    /**
+     * Returns an array of tokens this test wants to listen for.
+     *
+     * @return array
+     */
+    public function register()
+    {
+        return [T_OPEN_TAG];
+
+    }//end register()
+
+
+    /**
+     * Processes this sniff, when one of its tokens is encountered.
+     *
+     * @param \PHP_CodeSniffer\Files\File $phpcsFile The file being scanned.
+     * @param int                         $stackPtr  The position of the current token in
+     *                                               the stack passed in $tokens.
+     *
+     * @return int
+     */
+    public function process(File $phpcsFile, $stackPtr)
+    {
+        $this->spacingBefore = (int) $this->spacingBefore;
+        $this->spacingAfter  = (int) $this->spacingAfter;
+
+        $tokens = $phpcsFile->getTokens();
+
+        if ($stackPtr > 0) {
+            $before = trim($phpcsFile->getTokensAsString(0, $stackPtr));
+
+            if ($before === '') {
+                $error = 'Unexpected whitespace before PHP opening tag';
+                $fix   = $phpcsFile->addFixableError($error, 0, 'Whitespace');
+
+                if ($fix === true) {
+                    $phpcsFile->fixer->beginChangeset();
+                    for ($i = 0; $i < $stackPtr; ++$i) {
+                        $phpcsFile->fixer->replaceToken($i, '');
+                    }
+
+                    $phpcsFile->fixer->endChangeset();
+                }
+            } else {
+                $error = 'Missing strict type declaration as first statement in the script';
+                $fix   = $phpcsFile->addFixableError($error, 0, 'Missing');
+
+                if ($fix === true) {
+                    $phpcsFile->fixer->addContentBefore(
+                        0,
+                        sprintf('<?php %s ?>%s', $this->format, $phpcsFile->eolChar)
+                    );
+                }
+            }//end if
+
+            $this->checkOtherDeclarations($phpcsFile);
+
+            return ($phpcsFile->numTokens + 1);
+        }//end if
+
+        $next = $phpcsFile->findNext(Tokens::$emptyTokens, ($stackPtr + 1), null, true);
+
+        if ($tokens[$next]['code'] === T_DECLARE) {
+            $string = $phpcsFile->findNext(
+                T_STRING,
+                ($tokens[$next]['parenthesis_opener'] + 1),
+                $tokens[$next]['parenthesis_closer']
+            );
+
+            if ($string !== false
+                && stripos($tokens[$string]['content'], 'strict_types') !== false
+            ) {
+                $eos   = $phpcsFile->findEndOfStatement($next);
+                $prev  = $phpcsFile->findPrevious(T_WHITESPACE, ($next - 1), null, true);
+                $after = $phpcsFile->findNext(T_WHITESPACE, ($eos + 1), null, true);
+
+                if ($after !== false
+                    && $tokens[$prev]['code'] === T_OPEN_TAG
+                    && $tokens[$after]['code'] === T_CLOSE_TAG
+                ) {
+                    if ($tokens[$prev]['line'] !== $tokens[$next]['line']) {
+                        $error = 'PHP open tag must be on the same line as strict type declaration.';
+                        $fix   = $phpcsFile->addFixableError($error, $prev, 'OpenTag');
+
+                        if ($fix === true) {
+                            $phpcsFile->fixer->beginChangeset();
+                            $phpcsFile->fixer->replaceToken($prev, '<?php ');
+                            for ($i = ($prev + 1); $i < $next; ++$i) {
+                                $phpcsFile->fixer->replaceToken($i, '');
+                            }
+
+                            $phpcsFile->fixer->endChangeset();
+                        }
+
+                        $prev = false;
+                    }//end if
+
+                    if ($prev !== false && ($prev < ($next - 1) || $tokens[$prev]['content'] !== '<?php ')) {
+                        $error = 'Expected single space after PHP open tag and before strict type declaration.';
+                        $fix   = $phpcsFile->addFixableError($error, $prev, 'OpenTagSpace');
+
+                        if ($fix === true) {
+                            $phpcsFile->fixer->beginChangeset();
+                            $phpcsFile->fixer->replaceToken($prev, '<?php ');
+                            for ($i = ($prev + 1); $i < $next; ++$i) {
+                                $phpcsFile->fixer->replaceToken($i, '');
+                            }
+
+                            $phpcsFile->fixer->endChangeset();
+                        }
+                    }
+
+                    if ($tokens[$after]['line'] !== $tokens[$eos]['line']) {
+                        $error = 'PHP close tag must be on the same line as strict type declaration.';
+                        $fix   = $phpcsFile->addFixableError($error, $after, 'CloseTag');
+
+                        if ($fix === true) {
+                            $phpcsFile->fixer->beginChangeset();
+                            for ($i = ($eos + 1); $i < $after; ++$i) {
+                                $phpcsFile->fixer->replaceToken($i, '');
+                            }
+
+                            $phpcsFile->fixer->addContentBefore($after, ' ');
+                            $phpcsFile->fixer->endChangeset();
+                        }
+
+                        $after = false;
+                    }//end if
+
+                    if ($after !== false && ($after > ($eos + 2) || $tokens[($eos + 1)]['content'] !== ' ')) {
+                        $error = 'Expected single space before PHP close tag and after declaration.';
+                        $fix   = $phpcsFile->addFixableError($error, $after, 'CloseTagSpace');
+
+                        if ($fix === true) {
+                            $phpcsFile->fixer->beginChangeset();
+                            for ($i = ($eos + 1); $i < $after; ++$i) {
+                                $phpcsFile->fixer->replaceToken($i, '');
+                            }
+
+                            $phpcsFile->fixer->addContentBefore($after, ' ');
+                            $phpcsFile->fixer->endChangeset();
+                        }
+                    }//end if
+
+                    $prev  = false;
+                    $after = false;
+                }//end if
+
+                // Check how many blank lines there are before declare statement.
+                if ($prev !== false) {
+                    $linesBefore = ($tokens[$next]['line'] - $tokens[$prev]['line'] - 1);
+                    if ($linesBefore !== $this->spacingBefore) {
+                        if ($linesBefore < 0) {
+                            $error = 'Strict type declaration must be in new line';
+                            $data  = [];
+                        } else {
+                            $error = 'Invalid number of blank lines before declare statement; expected %d, but found %d';
+                            $data  = [
+                                $this->spacingBefore,
+                                $linesBefore,
+                            ];
+                        }
+
+                        $fix = $phpcsFile->addFixableError($error, $next, 'LinesBefore', $data);
+
+                        if ($fix === true) {
+                            $phpcsFile->fixer->beginChangeset();
+                            if ($linesBefore > $this->spacingBefore) {
+                                // Remove additional blank line(s).
+                                for ($i = ($prev + 1); $i < $next; ++$i) {
+                                    $phpcsFile->fixer->replaceToken($i, '');
+                                    if (($tokens[$next]['line'] - $tokens[($i + 1)]['line'] - 1) === $this->spacingBefore) {
+                                        break;
+                                    }
+                                }
+                            } else {
+                                // Clear whitespaces between prev and next, but no new lines.
+                                if ($linesBefore < 0) {
+                                    for ($i = ($prev + 1); $i < $next; ++$i) {
+                                        $phpcsFile->fixer->replaceToken($i, '');
+                                    }
+                                }
+
+                                // Add new blank line(s).
+                                while ($linesBefore < $this->spacingBefore) {
+                                    $phpcsFile->fixer->addNewlineBefore($next);
+                                    ++$linesBefore;
+                                }
+                            }//end if
+
+                            $phpcsFile->fixer->endChangeset();
+                        }//end if
+                    }//end if
+                }//end if
+
+                // Check number of blank lines after the declare statement.
+                if ($after !== false) {
+                    if ($tokens[$after]['code'] === T_CLOSE_TAG) {
+                        $this->spacingAfter = 0;
+                    }
+
+                    $linesAfter = ($tokens[$after]['line'] - $tokens[$eos]['line'] - 1);
+                    if ($linesAfter !== $this->spacingAfter) {
+                        if ($linesAfter < 0) {
+                            $error = 'Strict type declaration must be the only statement in the line';
+                            $data  = [];
+                        } else {
+                            $error = 'Invalid number of blank lines after declare statement; expected %d, but found %d';
+                            $data  = [
+                                $this->spacingAfter,
+                                $linesAfter,
+                            ];
+                        }
+
+                        $fix = $phpcsFile->addFixableError($error, $eos, 'LinesAfter', $data);
+
+                        if ($fix === true) {
+                            $phpcsFile->fixer->beginChangeset();
+                            if ($linesAfter > $this->spacingAfter) {
+                                for ($i = ($eos + 1); $i < $after; ++$i) {
+                                    $phpcsFile->fixer->replaceToken($i, '');
+                                    if (($tokens[$after]['line'] - $tokens[($i + 1)]['line'] - 1) === $this->spacingAfter) {
+                                        break;
+                                    }
+                                }
+                            } else {
+                                // Remove whitespaces between EOS and after token.
+                                if ($linesAfter < 0) {
+                                    for ($i = ($eos + 1); $i < $after; ++$i) {
+                                        $phpcsFile->fixer->replaceToken($i, '');
+                                    }
+                                }
+
+                                // Add new lines after the statement.
+                                while ($linesAfter < $this->spacingAfter) {
+                                    $phpcsFile->fixer->addNewline($eos);
+                                    ++$linesAfter;
+                                }
+                            }//end if
+
+                            $phpcsFile->fixer->endChangeset();
+                        }//end if
+                    }//end if
+                }//end if
+
+                // Check if declare statement match provided format.
+                $string = $phpcsFile->getTokensAsString($next, ($eos - $next + 1));
+                if ($string !== $this->format) {
+                    $error = 'Invalid format of strict type declaration; expected "%s", but found "%s"';
+                    $data  = [
+                        $this->format,
+                        $string,
+                    ];
+
+                    if ($this->normalize($string) === $this->normalize($this->format)) {
+                        $fix = $phpcsFile->addFixableError($error, $next, 'InvalidFormat', $data);
+
+                        if ($fix === true) {
+                            $phpcsFile->fixer->beginChangeset();
+                            for ($i = $next; $i < $eos; ++$i) {
+                                $phpcsFile->fixer->replaceToken($i, '');
+                            }
+
+                            $phpcsFile->fixer->replaceToken($eos, $this->format);
+                            $phpcsFile->fixer->endChangeset();
+                        }
+                    } else {
+                        $phpcsFile->addError($error, $next, 'InvalidFormatNotFixable', $data);
+                    }
+                }//end if
+
+                $this->checkOtherDeclarations($phpcsFile, $next);
+
+                return ($phpcsFile->numTokens + 1);
+            }//end if
+        }//end if
+
+        $this->checkOtherDeclarations($phpcsFile, $next);
+
+        $error = 'Missing strict type declaration at the beginning of the file';
+        $fix   = $phpcsFile->addFixableError($error, $stackPtr, 'NotFound');
+
+        if ($fix === true) {
+            $phpcsFile->fixer->addContent($stackPtr, $this->format.$phpcsFile->eolChar);
+        }
+
+        return ($phpcsFile->numTokens + 1);
+
+    }//end process()
+
+
+    /**
+     * Normalize given string by removing all white characters
+     * and changed to lower case.
+     *
+     * @param string $string String to be normalized.
+     *
+     * @return string
+     */
+    private function normalize($string)
+    {
+        return strtolower(preg_replace('/\s/', '', $string));
+
+    }//end normalize()
+
+
+    /**
+     * Process other strict_type declaration in the file and remove them.
+     * The declaration has to be the very first statement in the script.
+     *
+     * @param File $phpcsFile The file being scanned.
+     * @param int  $declare   The position of the first declaration.
+     *
+     * @return void
+     */
+    private function checkOtherDeclarations(File $phpcsFile, $declare=0)
+    {
+        $tokens = $phpcsFile->getTokens();
+
+        while (($declare = $phpcsFile->findNext(T_DECLARE, ($declare + 1))) !== false) {
+            $string = $phpcsFile->findNext(
+                T_STRING,
+                ($tokens[$declare]['parenthesis_opener'] + 1),
+                $tokens[$declare]['parenthesis_closer']
+            );
+
+            if ($string !== false
+                && stripos($tokens[$string]['content'], 'strict_types') !== false
+            ) {
+                $error = 'Strict type declaration must be the very first statement in the script';
+                $fix   = $phpcsFile->addFixableError($error, $declare, 'NotFirstStatement');
+
+                if ($fix === true) {
+                    $end = $phpcsFile->findNext(
+                        (Tokens::$emptyTokens + [T_SEMICOLON => T_SEMICOLON]),
+                        ($tokens[$declare]['parenthesis_closer'] + 1),
+                        null,
+                        true
+                    );
+
+                    if ($end === false) {
+                        $end = $phpcsFile->numTokens;
+                    }
+
+                    for ($i = $declare; $i < $end; ++$i) {
+                        $phpcsFile->fixer->replaceToken($i, '');
+                    }
+                }
+            }//end if
+        }//end while
+
+    }//end checkOtherDeclarations()
+
+
+}//end class
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.1.inc b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.1.inc
new file mode 100644
index 0000000000..ed04879a34
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.1.inc
@@ -0,0 +1,7 @@
+<?php
+
+
+/**
+ * @method string method(bool $b)
+ */
+class X {}
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.1.inc.fixed b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.1.inc.fixed
new file mode 100644
index 0000000000..ee5113e7d4
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.1.inc.fixed
@@ -0,0 +1,8 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @method string method(bool $b)
+ */
+class X {}
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.10.inc b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.10.inc
new file mode 100644
index 0000000000..f769717f7a
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.10.inc
@@ -0,0 +1,4 @@
+<?php
+declare(ticks=1) {}
+
+declare(strict_types=1);
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.10.inc.fixed b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.10.inc.fixed
new file mode 100644
index 0000000000..a488dd2479
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.10.inc.fixed
@@ -0,0 +1,6 @@
+<?php
+
+declare(strict_types=1);
+
+declare(ticks=1) {}
+
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.11.inc b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.11.inc
new file mode 100644
index 0000000000..3f8c8d00c3
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.11.inc
@@ -0,0 +1,12 @@
+<html>
+<head>
+    <title>
+        <?php
+        declare(strict_types=1);
+        echo 'Title';
+        ?>
+    </title>
+</head>
+
+<?php echo $content; ?>
+</html>
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.11.inc.fixed b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.11.inc.fixed
new file mode 100644
index 0000000000..cfad003bc5
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.11.inc.fixed
@@ -0,0 +1,12 @@
+<?php declare(strict_types=1); ?>
+<html>
+<head>
+    <title>
+        <?php
+        echo 'Title';
+        ?>
+    </title>
+</head>
+
+<?php echo $content; ?>
+</html>
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.12.inc b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.12.inc
new file mode 100644
index 0000000000..5ab5fb76bd
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.12.inc
@@ -0,0 +1,6 @@
+<?php
+// Comment
+declare(strict_types=1); ?>
+<html>
+<?php echo $content; ?>
+</html>
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.12.inc.fixed b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.12.inc.fixed
new file mode 100644
index 0000000000..eb1c6a1503
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.12.inc.fixed
@@ -0,0 +1,8 @@
+<?php
+// Comment
+
+declare(strict_types=1);
+?>
+<html>
+<?php echo $content; ?>
+</html>
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.13.inc b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.13.inc
new file mode 100644
index 0000000000..b5c390ae46
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.13.inc
@@ -0,0 +1,2 @@
+<?php
+declare(strict_types=1) /* comment */;
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.13.inc.fixed b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.13.inc.fixed
new file mode 100644
index 0000000000..cfbb34ea54
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.13.inc.fixed
@@ -0,0 +1,3 @@
+<?php
+
+declare(strict_types=1) /* comment */;
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.2.inc b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.2.inc
new file mode 100644
index 0000000000..a766f112a6
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.2.inc
@@ -0,0 +1,2 @@
+<?php
+declare(strict_types=1);
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.2.inc.fixed b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.2.inc.fixed
new file mode 100644
index 0000000000..174d7fd709
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.2.inc.fixed
@@ -0,0 +1,3 @@
+<?php
+
+declare(strict_types=1);
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.3.inc b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.3.inc
new file mode 100644
index 0000000000..f974dfd23a
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.3.inc
@@ -0,0 +1,8 @@
+<?php
+
+/**
+ * @copyright 2017
+ */
+
+
+declare(strict_types=1);
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.3.inc.fixed b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.3.inc.fixed
new file mode 100644
index 0000000000..637845de0a
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.3.inc.fixed
@@ -0,0 +1,7 @@
+<?php
+
+/**
+ * @copyright 2017
+ */
+
+declare(strict_types=1);
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.4.inc b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.4.inc
new file mode 100644
index 0000000000..75034b99f6
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.4.inc
@@ -0,0 +1,2 @@
+<?php
+declare(ticks=1) {}
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.4.inc.fixed b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.4.inc.fixed
new file mode 100644
index 0000000000..de14bc5720
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.4.inc.fixed
@@ -0,0 +1,5 @@
+<?php
+
+declare(strict_types=1);
+
+declare(ticks=1) {}
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.5.inc b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.5.inc
new file mode 100644
index 0000000000..b8280d6596
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.5.inc
@@ -0,0 +1,2 @@
+<?php
+declare(strict_types = 1);
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.5.inc.fixed b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.5.inc.fixed
new file mode 100644
index 0000000000..174d7fd709
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.5.inc.fixed
@@ -0,0 +1,3 @@
+<?php
+
+declare(strict_types=1);
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.6.inc b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.6.inc
new file mode 100644
index 0000000000..a6458b4061
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.6.inc
@@ -0,0 +1,8 @@
+<?php   declare(strict_types=1);   ?>
+<html>
+    <head>
+        <title><?php echo 'Title'; ?></title>
+    </head>
+
+    <?php echo $content; ?>
+</html>
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.6.inc.fixed b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.6.inc.fixed
new file mode 100644
index 0000000000..468d36c7e3
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.6.inc.fixed
@@ -0,0 +1,8 @@
+<?php declare(strict_types=1); ?>
+<html>
+    <head>
+        <title><?php echo 'Title'; ?></title>
+    </head>
+
+    <?php echo $content; ?>
+</html>
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.7.inc b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.7.inc
new file mode 100644
index 0000000000..0dd39dd47f
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.7.inc
@@ -0,0 +1,13 @@
+<?php
+
+
+declare(strict_types=1);
+
+?>
+<html>
+    <head>
+        <title><?php echo 'Title'; ?></title>
+    </head>
+
+    <?php echo $content; ?>
+</html>
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.7.inc.fixed b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.7.inc.fixed
new file mode 100644
index 0000000000..468d36c7e3
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.7.inc.fixed
@@ -0,0 +1,8 @@
+<?php declare(strict_types=1); ?>
+<html>
+    <head>
+        <title><?php echo 'Title'; ?></title>
+    </head>
+
+    <?php echo $content; ?>
+</html>
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.8.inc b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.8.inc
new file mode 100644
index 0000000000..7d570e9783
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.8.inc
@@ -0,0 +1,15 @@
+<?php
+/**
+ * @author
+ */
+
+declare(strict_types=1);
+
+?>
+<html>
+    <head>
+        <title><?php echo 'Title'; ?></title>
+    </head>
+
+    <?php echo $content; ?>
+</html>
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.8.inc.fixed b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.8.inc.fixed
new file mode 100644
index 0000000000..ec8ce723db
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.8.inc.fixed
@@ -0,0 +1,14 @@
+<?php
+/**
+ * @author
+ */
+
+declare(strict_types=1);
+?>
+<html>
+    <head>
+        <title><?php echo 'Title'; ?></title>
+    </head>
+
+    <?php echo $content; ?>
+</html>
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.9.inc b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.9.inc
new file mode 100644
index 0000000000..6d6f87740d
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.9.inc
@@ -0,0 +1 @@
+<?php /* Must be first. */ declare(strict_types=1); /* Comment after. */ ?>
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.9.inc.fixed b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.9.inc.fixed
new file mode 100644
index 0000000000..2e2406790e
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.9.inc.fixed
@@ -0,0 +1,5 @@
+<?php /* Must be first. */
+
+declare(strict_types=1);
+
+/* Comment after. */ ?>
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.inc b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.inc
new file mode 100644
index 0000000000..7438d056ff
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.inc
@@ -0,0 +1,8 @@
+
+
+<?php
+
+declare(strict_types=1);
+
+
+namespace MyNamespace;
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.inc.fixed b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.inc.fixed
new file mode 100644
index 0000000000..ab814d6381
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.inc.fixed
@@ -0,0 +1,5 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MyNamespace;
diff --git a/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.php b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.php
new file mode 100644
index 0000000000..4e23ade8c3
--- /dev/null
+++ b/src/Standards/Generic/Tests/PHP/DeclareStrictTypesUnitTest.php
@@ -0,0 +1,91 @@
+<?php
+/**
+ * Unit test class for the DeclareStrictTypes sniff.
+ *
+ * @author    Michał Bundyra <contact@webimpress.com>
+ * @copyright 2006-2019 Squiz Pty Ltd (ABN 77 084 670 600)
+ * @license   https://github.com/squizlabs/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
+ */
+
+namespace PHP_CodeSniffer\Standards\Generic\Tests\PHP;
+
+use PHP_CodeSniffer\Tests\Standards\AbstractSniffUnitTest;
+
+class DeclareStrictTypesUnitTest extends AbstractSniffUnitTest
+{
+
+
+    /**
+     * Returns the lines where errors should occur.
+     *
+     * The key of the array should represent the line number and the value
+     * should represent the number of errors that should occur on that line.
+     *
+     * @param string $testFile The name of the file being tested.
+     *
+     * @return array<int, int>
+     */
+    public function getErrorList($testFile='')
+    {
+        switch ($testFile) {
+        case 'DeclareStrictTypesUnitTest.1.inc':
+            return [1 => 1];
+        case 'DeclareStrictTypesUnitTest.2.inc':
+            return [2 => 1];
+        case 'DeclareStrictTypesUnitTest.3.inc':
+            return [8 => 1];
+        case 'DeclareStrictTypesUnitTest.4.inc':
+            return [1 => 1];
+        case 'DeclareStrictTypesUnitTest.5.inc':
+            return [2 => 2];
+        case 'DeclareStrictTypesUnitTest.6.inc':
+            return [1 => 2];
+        case 'DeclareStrictTypesUnitTest.7.inc':
+            return [
+                1 => 1,
+                6 => 1,
+            ];
+        case 'DeclareStrictTypesUnitTest.8.inc':
+            return [6 => 1];
+        case 'DeclareStrictTypesUnitTest.9.inc':
+            return [1 => 2];
+        case 'DeclareStrictTypesUnitTest.10.inc':
+            return [
+                1 => 1,
+                4 => 1,
+            ];
+        case 'DeclareStrictTypesUnitTest.11.inc':
+            return [
+                1 => 1,
+                5 => 1,
+            ];
+        case 'DeclareStrictTypesUnitTest.12.inc':
+            return [3 => 2];
+        case 'DeclareStrictTypesUnitTest.13.inc':
+            return [2 => 2];
+        }//end switch
+
+        return [
+            1 => 1,
+            5 => 1,
+        ];
+
+    }//end getErrorList()
+
+
+    /**
+     * Returns the lines where warnings should occur.
+     *
+     * The key of the array should represent the line number and the value
+     * should represent the number of warnings that should occur on that line.
+     *
+     * @return array<int, int>
+     */
+    public function getWarningList()
+    {
+        return [];
+
+    }//end getWarningList()
+
+
+}//end class