3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = ['key' => 'blah', 'key2' => 'bleh']; echo '<a href="x.php?&y="'.$var['key'].'">'.$var['key'].'</a>: '.$var['key2']."<br>";
Output for 7.0.0 - 7.0.24, 7.1.0 - 7.1.20, 7.2.5 - 7.2.33, 7.3.16 - 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 - 8.3.4, 8.3.6
<a href="x.php?&y="blah">blah</a>: bleh<br>
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 <a href="x.php?&y="blah">blah</a>: bleh<br>

preferences:
162.73 ms | 402 KiB | 179 Q