3v4l.org

run code in 300+ PHP versions simultaneously
<?php $params = [ 'param1' => 1, 'param2' => new Class { public function __toString():string {return 'test';} } ]; echo http_build_query($params) . PHP_EOL; foreach ($params as $k => &$v) $params[$k] = (string) $v; echo http_build_query($params) . PHP_EOL;

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13.91 ms | 404 KiB | 5 Q