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<?php print_r(str_split('', 1)); print_r(mb_str_split('', 1)); print_r(mb_str_split('', 1, 'UTF-8')); print_r(mb_str_split('', 1, 'ASCII')); print_r(array_chunk(array(), 1));
Output for 8.2.0 - 8.2.32, 8.3.0 - 8.3.33, 8.4.1 - 8.4.24, 8.5.0 - 8.5.9
Array ( ) Array ( ) Array ( ) Array ( ) Array ( )
Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34
Array ( [0] => ) Array ( ) Array ( ) Array ( ) Array ( )
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33
Array ( [0] => ) Fatal error: Uncaught Error: Call to undefined function mb_str_split() in /in/1WsGi:4 Stack trace: #0 {main} thrown in /in/1WsGi on line 4
Process exited with code 255.
Output for 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 - 5.6.40
Array ( [0] => ) Fatal error: Call to undefined function mb_str_split() in /in/1WsGi on line 4
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Array ( ) Fatal error: Call to undefined function mb_str_split() in /in/1WsGi on line 4
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: str_split() in /in/1WsGi on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4
Fatal error: Call to undefined function: str_split() in /in/1WsGi on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: str_split() in /in/1WsGi on line 3

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