3v4l.org

run code in 300+ PHP versions simultaneously
<?php $proj_id = 42; ?> when you are inside html: <a href="index.php?proj_id=<?=$proj_id; ?>">back to project</a> when you're in php: <?php echo "<a href='index.php?proj_id={$proj_id}'>back to project</a>"; echo "\n\nOr:\n\n"; echo "<a href='index.php?proj_id=${proj_id}'>back to project</a>"; echo "\n\nOr:\n\n"; echo "<a href='index.php?proj_id=$proj_id'>back to project</a>"; ?> If it was Twig (but it isn't): <a href="index.php?proj_id={{proj_id}}">back to project</a>
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Deprecated: Using ${var} in strings is deprecated, use {$var} instead in /in/q3vUR on line 17 when you are inside html: <a href="index.php?proj_id=42">back to project</a> when you're in php: <a href='index.php?proj_id=42'>back to project</a> Or: <a href='index.php?proj_id=42'>back to project</a> Or: <a href='index.php?proj_id=42'>back to project</a> If it was Twig (but it isn't): <a href="index.php?proj_id={{proj_id}}">back to project</a>
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 Deprecated: Using ${var} in strings is deprecated, use {$var} instead in /in/q3vUR on line 17 when you are inside html: <a href="index.php?proj_id=42">back to project</a> when you're in php: <a href='index.php?proj_id=42'>back to project</a> Or: <a href='index.php?proj_id=42'>back to project</a> Or: <a href='index.php?proj_id=42'>back to project</a> If it was Twig (but it isn't): <a href="index.php?proj_id={{proj_id}}">back to project</a>
Output for 7.1.0 - 7.1.20, 7.2.0 - 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
when you are inside html: <a href="index.php?proj_id=42">back to project</a> when you're in php: <a href='index.php?proj_id=42'>back to project</a> Or: <a href='index.php?proj_id=42'>back to project</a> Or: <a href='index.php?proj_id=42'>back to project</a> If it was Twig (but it isn't): <a href="index.php?proj_id={{proj_id}}">back to project</a>

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