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Allow class extension #5

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Allow class extension #5

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a6833dd
Allow class extension
rokkie Jul 11, 2017
5c5b034
Use late static binding in open method
rokkie Jul 11, 2017
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8 changes: 4 additions & 4 deletions btree.php
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
<?php
final class btree
class btree
{
/**
* Size of header
Expand Down Expand Up @@ -39,12 +39,12 @@ final class btree
/**
* @var resource BTree file handle
*/
private $handle;
protected $handle;

/**
* @var string BTree filename
*/
private $filename;
protected $filename;

/**
* @var array Node cache
Expand Down Expand Up @@ -484,7 +484,7 @@ public static function open($filename)
}

// create instance
return new self($handle, $filename);
return new static($handle, $filename);
}

/**
Expand Down