3v4l.org

run code in 300+ PHP versions simultaneously
<?php function isCorrect($string) { $string{strlen($string)-1}; } $string = '()'; var_dump($string{strlen($string)}); //assert(isCorrect('') === true); //assert(isCorrect('()') === true); //assert(isCorrect('{()}') === true); //assert(isCorrect('{()}{}') === true); //assert(isCorrect('(())') === true); //assert(isCorrect('{({({({()})})})}') === true); //assert(isCorrect('{(})') === false);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Array and string offset access syntax with curly braces is no longer supported in /in/43l4J on line 3
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Deprecated: Array and string offset access syntax with curly braces is deprecated in /in/43l4J on line 3 Deprecated: Array and string offset access syntax with curly braces is deprecated in /in/43l4J on line 6 Notice: Uninitialized string offset: 2 in /in/43l4J on line 6 string(0) ""
Output for 7.3.32 - 7.3.33
string(0) ""
Output for 5.2.10 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31
Notice: Uninitialized string offset: 2 in /in/43l4J on line 6 string(0) ""
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.1 - 5.1.6, 5.2.0 - 5.2.9
Notice: Uninitialized string offset: 2 in /in/43l4J on line 6 string(0) ""
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/43l4J on line 13
Process exited with code 255.
preferences:
258.02 ms | 401 KiB | 459 Q