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<?php $string = "hello$this$string has$some spaces"; var_dump(explode('$', $string));
Output for 7.1.0 - 7.1.20, 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 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Using $this when not in object context in /in/QPdZd:2 Stack trace: #0 {main} thrown in /in/QPdZd on line 2
Process exited with code 255.
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 - 5.5.36, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20
Notice: Undefined variable: this in /in/QPdZd on line 2 Notice: Undefined variable: string in /in/QPdZd on line 2 Notice: Undefined variable: some in /in/QPdZd on line 2 array(1) { [0]=> string(16) "hello has spaces" }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.3
Notice: Undefined variable: this in /in/QPdZd on line 2 Notice: Undefined variable: string in /in/QPdZd on line 2 Notice: Undefined variable: some in /in/QPdZd on line 2 array(1) { [0]=> string(16) "hello has spaces" }

preferences:
247.77 ms | 402 KiB | 347 Q