3v4l.org

run code in 300+ PHP versions simultaneously
<?php $originalParams = [ 'foo' => 'bar', 'faz' => [1,2,3], 'targeting' => [ 'countries' => 'US,GB', 'age_min' => 13, ], 'call_to_action' => [ 'type' => 'LEARN_MORE', 'value' => [ 'link' => 'http://example.com', 'sponsorship' => [ 'image' => 'http://example.com/bar.jpg', ], ], ], ]; echo http_build_query($originalParams);
Output for 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 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 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 - 8.3.6
foo=bar&faz%5B0%5D=1&faz%5B1%5D=2&faz%5B2%5D=3&targeting%5Bcountries%5D=US%2CGB&targeting%5Bage_min%5D=13&call_to_action%5Btype%5D=LEARN_MORE&call_to_action%5Bvalue%5D%5Blink%5D=http%3A%2F%2Fexample.com&call_to_action%5Bvalue%5D%5Bsponsorship%5D%5Bimage%5D=http%3A%2F%2Fexample.com%2Fbar.jpg
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 '[' in /in/dL9pO on line 3
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 '[' in /in/dL9pO on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/dL9pO on line 3
Process exited with code 255.
preferences:
218.52 ms | 401 KiB | 327 Q