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<?php $numeric_string = '42'; $integer = 42; $test = 'test'; var_dump(ctype_digit($numeric_string)); // true var_dump(ctype_digit($integer)); // false var_dump(ctype_digit($test)); // false var_dump(is_numeric($numeric_string)); // true var_dump(is_numeric($integer)); // true var_dump(is_numeric($test)); // true
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
bool(true) Deprecated: ctype_digit(): Argument of type int will be interpreted as string in the future in /in/g1Y5P on line 9 bool(false) bool(false) bool(true) bool(true) bool(false)
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 bool(true) Deprecated: ctype_digit(): Argument of type int will be interpreted as string in the future in /in/g1Y5P on line 9 bool(false) bool(false) bool(true) bool(true) bool(false)
Output for 7.0.0 - 7.0.20, 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(true) bool(false) bool(false) bool(true) bool(true) bool(false)
preferences:
170.1 ms | 403 KiB | 218 Q