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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 $element) { if (is_numeric($element)) { echo "'{$element}' is numeric", PHP_EOL; } else { echo "'{$element}' is NOT numeric", PHP_EOL; } }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
'42' is numeric '1337' is numeric '1337' is numeric '0x539' is NOT numeric '1337' is numeric '02471' is numeric '1337' is numeric '0b10100111001' is NOT numeric '1337' is numeric '1337e0' is numeric 'not numeric' is NOT numeric Warning: Array to string conversion in /in/pGVWt on line 22 'Array' is NOT numeric '9.1' is numeric
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
'42' is numeric '1337' is numeric '1337' is numeric '0x539' is NOT numeric '1337' is numeric '02471' is numeric '1337' is numeric '0b10100111001' is NOT numeric '1337' is numeric '1337e0' is numeric 'not numeric' is NOT numeric Notice: Array to string conversion in /in/pGVWt on line 22 'Array' is NOT numeric '9.1' is numeric
Output for 7.3.32 - 7.3.33, 7.4.26
'42' is numeric '1337' is numeric '1337' is numeric '0x539' is NOT numeric '1337' is numeric '02471' is numeric '1337' is numeric '0b10100111001' is NOT numeric '1337' is numeric '1337e0' is numeric 'not numeric' is NOT numeric 'Array' is NOT numeric '9.1' is numeric
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.36, 5.6.0 - 5.6.28
'42' is numeric '1337' is numeric '1337' is numeric '0x539' is numeric '1337' is numeric '02471' is numeric '1337' is numeric '0b10100111001' is NOT numeric '1337' is numeric '1337e0' is numeric 'not numeric' is NOT numeric Notice: Array to string conversion in /in/pGVWt on line 22 'Array' is NOT numeric '9.1' is numeric
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_STRING, expecting ')' in /in/pGVWt on line 9
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_STRING, expecting ')' in /in/pGVWt on line 9
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/pGVWt on line 9
Process exited with code 255.

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