3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(ctype_digit(7), ctype_digit('7'), ctype_digit((string) 7));
Output for 8.1.0 - 8.1.30, 8.2.0 - 8.2.24, 8.3.0 - 8.3.12
Deprecated: ctype_digit(): Argument of type int will be interpreted as string in the future in /in/c0s2g on line 3 bool(false) bool(true) bool(true)
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
bool(false) bool(true) bool(true)

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85.88 ms | 410 KiB | 5 Q