Typographic fixes. (#4909)

Author: Crell

language/operators/functional.xml

@@ -3,7 +3,7 @@
  <title>Functional Operators</title>
  <titleabbrev>Functional</titleabbrev>
  <para>
-  PHP 8.5 and later supports one operator that works directly on callables.  The <literal>|></literal>
+  PHP 8.5 and later supports one operator that works directly on callables.  The <literal>|&gt;</literal>
   operator, or “pipe,” accepts a single-parameter callable on the right and passes
   the left-side value to it, evaluating to the callable's result.  The callable
   on the right may be any valid PHP callable: a <classname>Closure</classname>,
@@ -13,15 +13,15 @@
  <para>
   That means the following two lines are logically equivalent.
   <example>
-   <title>Using <literal>|></literal></title>
+   <title>Using <literal>|&gt;</literal></title>
    <programlisting role="php">
 <![CDATA[
 <?php
 $result = "Hello World" |> strlen(...);
-print $result . PHP_EOL;
+echo $result, PHP_EOL;
 
 $result = strlen("Hello World");
-print $result . PHP_EOL;
+echo $result, PHP_EOL;
 ?>
 ]]>
    </programlisting>
@@ -38,7 +38,7 @@ print $result . PHP_EOL;
   For a single call that is not especially useful. It becomes useful when multiple calls are chained together.
   That is, the following two code fragments are logically equivalent:
   <example>
-   <title>Chaining |> calls</title>
+   <title>Chaining |&gt; calls</title>
    <programlisting role="php">
 <![CDATA[
 <?php
@@ -48,15 +48,15 @@ $result = "PHP Rocks"
     |> (fn($x) => array_map(strtoupper(...), $x))
     |> (fn($x) => array_filter($x, fn($v) => $v != 'O'))
 ;
-print $result . PHP_EOL;
+echo $result, PHP_EOL;
 
 $temp = "PHP Rocks";
 $temp = htmlentities($temp);
 $temp = str_split($temp);
 $temp = array_map(strtoupper(...), $temp);
 $temp = array_filter($temp, fn($v) => $v != 'O');
 $result = $temp;
-print $result . PHP_EOL;
+echo $result, PHP_EOL;
 ?>
 ]]>
    </programlisting>