3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Student { private $classes; public function __construct($classes) { $this->classes = $classes; } public function getClasses() { return $this->classes; } public function combineClasses(Student $otherStudent) { $allClasses = array_unique(array_merge($this->classes, $otherStudent->classes)); $this->classes = $allClasses; $otherStudent->classes = $allClasses; } } $mary = new Student(['CompSci2001', 'CompSci2002']); $john = new Student(['CompSci2002', 'CompSci2003']); $mary->combineClasses($john); var_dump($mary->getClasses()); var_dump($john->getClasses());
Output for 5.6.0 - 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 - 8.3.4, 8.3.6
array(3) { [0]=> string(11) "CompSci2001" [1]=> string(11) "CompSci2002" [3]=> string(11) "CompSci2003" } array(3) { [0]=> string(11) "CompSci2001" [1]=> string(11) "CompSci2002" [3]=> string(11) "CompSci2003" }
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 array(3) { [0]=> string(11) "CompSci2001" [1]=> string(11) "CompSci2002" [3]=> string(11) "CompSci2003" } array(3) { [0]=> string(11) "CompSci2001" [1]=> string(11) "CompSci2002" [3]=> string(11) "CompSci2003" }
preferences:
178.05 ms | 402 KiB | 205 Q