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array_key_exists vs isset Code Example
array_key_exists vs isset
$a = array('key1' => 'text', 'key2' => null);

isset($a['key1']);             // true
array_key_exists('key1', $a);  // true

isset($a['key2']);             // false
array_key_exists('key2', $a);  // true




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Code Example
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