3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arg = array( 'auto_refresh' => '0', 'tags' => 'a,b,c'); $finalArg = ''; foreach($arg as $key=>$value){ $finalArg.= $key.'='.$value.'&'; } $finalArg = substr($finalArg,0,-1); echo $finalArg;
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 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
auto_refresh=0&tags=a,b,c
preferences:
238.97 ms | 406 KiB | 398 Q