3v4l.org

run code in 300+ PHP versions simultaneously
<?php class foo { function __construct() { $this->a = "hello"; $this->b = "hi"; $this->val = "howdy"; $val = "a"; echo $this->{$val}; // outputs "hello" echo "\n"; $val = "b"; echo $this->{$val}; // outputs "hi" echo "\n"; echo $this->val; //outputs "howdy" echo "\n"; echo $this->{"val"}; } function saluda(){ $this->a; echo $a; } } $foo = new foo(); $foo->saluda();
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: Creation of dynamic property foo::$a is deprecated in /in/AA3TB on line 5 Deprecated: Creation of dynamic property foo::$b is deprecated in /in/AA3TB on line 6 Deprecated: Creation of dynamic property foo::$val is deprecated in /in/AA3TB on line 7 hello hi howdy howdy Warning: Undefined variable $a in /in/AA3TB on line 26
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
hello hi howdy howdy Warning: Undefined variable $a in /in/AA3TB on line 26
Output for 5.0.4 - 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 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
hello hi howdy howdy Notice: Undefined variable: a in /in/AA3TB on line 26
Output for 7.3.32 - 7.3.33, 7.4.26
hello hi howdy howdy
Output for 5.0.0 - 5.0.3
hello hi howdy howdy Notice: Undefined variable: a in /in/AA3TB on line 26
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
Notice: Undefined property: a in /in/AA3TB on line 25 Notice: Undefined variable: a in /in/AA3TB on line 26
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270.57 ms | 401 KiB | 425 Q