3v4l.org

run code in 500+ PHP versions simultaneously
<?php $rand = md5(random_bytes(16)); $doc = new DOMDocument("1.0"); $node = $doc->createElement("input"); $newnode = $doc->appendChild($node); $newnode->setAttribute("required", 'delete-this' . $rand); var_dump( str_replace( array('="delete-this' . $rand . '"'), array(''), $doc->saveHTML() ) );
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.13, 7.3.0 - 7.3.1
string(17) "<input required> "
Output for 5.6.0 - 5.6.26
Fatal error: Call to undefined function random_bytes() in /in/WiW8m on line 3
Process exited with code 255.
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