3v4l.org

run code in 300+ PHP versions simultaneously
<?php $packed = pack('a6', 'i'); // PHP 5.4 $data = "hoge" // PHP 5.5 $data = "hoge\0\0" var_dump($data = unpack('a1b/a1c', $packed)); // PHP 5.5 $data = "hoge" var_dump($data = unpack('Z6', $packed));

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