3v4l.org

run code in 300+ PHP versions simultaneously
<?php $MyMondayClasses = $MyTuesdayClasses = $MyWednesdayClasses = $MyThursdayClasses = $MyFridayClasses = range("A", "Z"); $days = array( 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday' ); foreach ( $days as $value ) { $name = ${sprintf("My%sClasses", $value)}; if (! isset($name)) // add some validation continue; foreach ( $name as $ClassKey => $ClassVar ) { //play some ball } }
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 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
preferences:
217.7 ms | 406 KiB | 356 Q