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<?php var_dump(http_build_query(array('type' => 'http', 'thing' => 'foo'))); var_dump(http_build_query(array('type' => 'http', 'thing' => 'foo'), '', '&'));
Output for 5.1.2 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(19) "type=http&thing=foo" string(19) "type=http&thing=foo"
Output for 5.0.0 - 5.1.1
string(19) "type=http&thing=foo" <br /> <b>Warning</b>: http_build_query() expects at most 2 parameters, 3 given in <b>/in/IfpvF</b> on line <b>4</b><br /> bool(false)
Output for 4.4.5 - 4.4.9
<br /> <b>Fatal error</b>: Call to undefined function: http_build_query() in <b>/in/IfpvF</b> on line <b>3</b><br />
Process exited with code 255.
Output for 4.3.2 - 4.4.4
<br /> <b>Fatal error</b>: Call to undefined function: http_build_query() in <b>/in/IfpvF</b> on line <b>3</b><br />
Process exited with code 255.
Output for 4.3.0 - 4.3.1
<br /> <b>Fatal error</b>: Call to undefined function: http_build_query() in <b>/in/IfpvF</b> on line <b>3</b><br />