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run code in 500+ PHP versions simultaneously
<?php var_dump(filter_var('+-', FILTER_SANITIZE_NUMBER_FLOAT));
Output for 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 - 8.1.34, 8.2.0 - 8.2.31, 8.3.0 - 8.3.31, 8.4.1 - 8.4.22, 8.5.0 - 8.5.7
string(2) "+-"
preferences:
113.43 ms | 1502 KiB | 4 Q