3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Student { private $name; public function __construct(string $name) { $this->name = $name; } public function getName(): string { return $this->name; } } class Secretary { private $students = []; public function addStudent(Student $s): Secretary { array_push($this->students, $s); return $this; } public function getStudents(): array { return $this->students; } } $s = new Secretary(); $s->addStudent(new Student('Foo')); var_dump($s->getStudents());
Output for 7.0.0, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
array(1) { [0]=> object(Student)#2 (1) { ["name":"Student":private]=> string(3) "Foo" } }
Output for 4.3.0
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/CYVG1 on line 5
Process exited with code 255.
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129.91 ms | 407 KiB | 5 Q