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run code in 300+ PHP versions simultaneously
<?php class A { public $e = array(); } class Token implements \Serializable { public function serialize() { $c = new A; for ($i = 0; $i < 4; $i++) { $e = new A; $c->e[] = $e; $e->e = $c->e; } return serialize(array(serialize($c))); } public function unserialize($str) { $r = unserialize($str); $r = unserialize($r[0]); } } $token = new Token; $token = serialize($token); unserialize($token);
Output for 8.3.0 - 8.3.6
Deprecated: Token implements the Serializable interface, which is deprecated. Implement __serialize() and __unserialize() instead (or in addition, if support for old PHP versions is necessary) in /in/DRlHA on line 7 Warning: unserialize(): Error at offset 106 of 229 bytes in /in/DRlHA on line 25
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18
Deprecated: Token implements the Serializable interface, which is deprecated. Implement __serialize() and __unserialize() instead (or in addition, if support for old PHP versions is necessary) in /in/DRlHA on line 7 Notice: unserialize(): Error at offset 106 of 229 bytes in /in/DRlHA on line 25
Output for 7.3.12 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33, 8.0.0 - 8.0.30
Notice: unserialize(): Error at offset 106 of 191 bytes in /in/DRlHA on line 25
Output for 5.3.0 - 5.3.29, 5.4.20 - 5.4.45, 5.5.4 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.32 - 7.3.33, 7.4.26
Output for 5.4.0 - 5.4.19, 5.5.0 - 5.5.3

Process exited with code 139.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/DRlHA on line 7
Output for 5.0.5
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/DRlHA on line 7 Fatal error: Interface 'Serializable' not found in /in/DRlHA on line 7
Process exited with code 255.
Output for 5.0.0 - 5.0.4
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/DRlHA on line 7 Fatal error: Class 'Serializable' not found in /in/DRlHA on line 7
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/DRlHA on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/DRlHA on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/DRlHA on line 4
Process exited with code 255.
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