3v4l.org

run code in 300+ PHP versions simultaneously
<?php $check; if (!isset($_POST['checkid'])) { $check = 'checked="checked"'; } ?> <html> <body> <div> <form method="POST"> <input type="checkbox" id="checkid" value="1" onChange="this.form.submit();" {$check} /> </form> </div> <body> </html>
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
<html> <body> <div> <form method="POST"> <input type="checkbox" id="checkid" value="1" onChange="this.form.submit();" {$check} /> </form> </div> <body> </html>
preferences:
212.81 ms | 404 KiB | 292 Q