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<?php var_dump(preg_match('/^-?\d+$/', '-123')); var_dump(preg_match('/^-?\d+$/', '123')); var_dump(ctype_digit(0)); var_dump(ctype_digit("0")); var_dump(ctype_digit("1"));
Output for git.master, git.master_jit, rfc.property-hooks
int(1) int(1) Deprecated: ctype_digit(): Argument of type int will be interpreted as string in the future in /in/M9CAo on line 4 bool(false) bool(true) bool(true)

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