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<?php $tests = array( "42", 1337, 0x539, '0x539', 02471, '02471', 0b10100111001, '0b10100111001', 1337e0, '1337e0', "not numeric", array(), 9.1 ); foreach ($tests as $element) { var_dump($element); if (is_numeric($element)) { echo " is numeric", PHP_EOL; } else { echo " is NOT numeric", PHP_EOL; } }
Output for git.master, git.master_jit, rfc.property-hooks
string(2) "42" is numeric int(1337) is numeric int(1337) is numeric string(5) "0x539" is NOT numeric int(1337) is numeric string(5) "02471" is numeric int(1337) is numeric string(13) "0b10100111001" is NOT numeric float(1337) is numeric string(6) "1337e0" is numeric string(11) "not numeric" is NOT numeric array(0) { } is NOT numeric float(9.1) is numeric

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