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Fix warning with PHP 7.2 when trying to count NULL #50

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Fix warning with PHP 7.2 when trying to count NULL #50

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10 changes: 5 additions & 5 deletions lib/Diff/SequenceMatcher.php
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Original file line number Diff line number Diff line change
Expand Up @@ -50,12 +50,12 @@ class Diff_SequenceMatcher
/**
* @var array The first sequence to compare against.
*/
private $a = null;
private $a = array();

/**
* @var array The second sequence.
*/
private $b = null;
private $b = array();

/**
* @var array Array of characters that are considered junk from the second sequence. Characters are the array key.
Expand Down Expand Up @@ -86,8 +86,8 @@ class Diff_SequenceMatcher
*/
public function __construct($a, $b, $junkCallback=null, $options)
{
$this->a = null;
$this->b = null;
$this->a = array();
$this->b = array();
$this->junkCallback = $junkCallback;
$this->setOptions($options);
$this->setSequences($a, $b);
Expand Down Expand Up @@ -739,4 +739,4 @@ private function tupleSort($a, $b)
return 1;
}
}
}
}