3v4l.org

run code in 300+ PHP versions simultaneously
<?php class foo { public function __toString() { return "bar"; } } $params = array(); $params['a'] = 'b'; $params['foo'] = (string) new foo(); $query = http_build_query($params); var_dump($params, $query);
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.6 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.30, 8.0.0 - 8.0.22, 8.1.0 - 8.1.9
array(2) { ["a"]=> string(1) "b" ["foo"]=> string(3) "bar" } string(11) "a=b&foo=bar"
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
array(2) { ["a"]=> string(1) "b" ["foo"]=> string(12) "Object id #1" } string(22) "a=b&foo=Object+id+%231"
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/eMb8J on line 5
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
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/eMb8J on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/eMb8J on line 5
Process exited with code 255.

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