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@ 2026-10-14T12:44:45Z

<?php

$proposedName = "Is____super____valid";

$tokens = token_get_all("<?php $proposedName");

if ( isset($tokens[1]) && is_array($tokens[1]) && $tokens[1][0] !== T_STRING ) {
    print 'Invalid Name';
} else {
    print 'Valid Name';
}

Output
Performance
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Output for 8.2.29: Valid Name

preferences:dark modelive previewkey bindings

33.04 ms | 1136 KiB | 6 Q