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run code in 150+ php & hhvm versions
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<?php echo http_build_query(array('foo' => 1, 'bar' => 2)), "\n"; ini_set('arg_separator.output', '&amp;'); echo http_build_query(array('foo' => 1, 'bar' => 2)), "\n";
Output for 5.0.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
foo=1&bar=2 foo=1&amp;bar=2
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: http_build_query() in /in/O66Dn on line 3
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: http_build_query() in /in/O66Dn on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: http_build_query() in /in/O66Dn on line 3