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run code in 500+ PHP versions simultaneously
<?php $check = fn ($a) => ctype_upper($a); $check(3); $check([]); $check(new stdClass); $check(3.5); $check(true); $check(null); $check(0); $check(256);
Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
Deprecated: ctype_upper(): Argument of type int will be interpreted as string in the future in /in/PgZ6c on line 3 Deprecated: ctype_upper(): Argument of type array will be interpreted as string in the future in /in/PgZ6c on line 3 Deprecated: ctype_upper(): Argument of type stdClass will be interpreted as string in the future in /in/PgZ6c on line 3 Deprecated: ctype_upper(): Argument of type float will be interpreted as string in the future in /in/PgZ6c on line 3 Deprecated: ctype_upper(): Argument of type bool will be interpreted as string in the future in /in/PgZ6c on line 3 Deprecated: ctype_upper(): Argument of type null will be interpreted as string in the future in /in/PgZ6c on line 3 Deprecated: ctype_upper(): Argument of type int will be interpreted as string in the future in /in/PgZ6c on line 3 Deprecated: ctype_upper(): Argument of type int will be interpreted as string in the future in /in/PgZ6c on line 3
preferences:
62.72 ms | 1088 KiB | 4 Q