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<?php $tests = array( "42", 1337, 0x539, 02471, 0b10100111001, 1337e0, "not numeric", array(), 9.1, null, 0xf4c3b00c ); foreach ($tests as $element) { if (is_numeric($element)) { echo var_export($element, true) . " is numeric", PHP_EOL; } else { echo var_export($element, true) . " is NOT numeric", PHP_EOL; } } ?>
Output for 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
'42' is numeric 1337 is numeric 1337 is numeric 1337 is numeric 1337 is numeric 1337.0 is numeric 'not numeric' is NOT numeric array ( ) is NOT numeric 9.1 is numeric NULL is NOT numeric 4106465292 is numeric
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 '42' is numeric 1337 is numeric 1337 is numeric 1337 is numeric 1337 is numeric 1337.0 is numeric 'not numeric' is NOT numeric array ( ) is NOT numeric 9.1 is numeric NULL is NOT numeric 4106465292 is numeric
Output for 7.0.2 - 7.0.25
'42' is numeric 1337 is numeric 1337 is numeric 1337 is numeric 1337 is numeric 1337.0 is numeric 'not numeric' is NOT numeric array ( ) is NOT numeric 9.0999999999999996 is numeric NULL is NOT numeric 4106465292 is numeric
Output for 7.0.0 - 7.0.1
'42' is numeric 1337 is numeric 1337 is numeric 1337 is numeric 1337 is numeric 1337 is numeric 'not numeric' is NOT numeric array ( ) is NOT numeric 9.0999999999999996 is numeric NULL is NOT numeric 4106465292 is numeric
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150.98 ms | 401 KiB | 180 Q