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run code in 300+ PHP versions simultaneously
<?php $func = new ReflectionFunction( 'mb_substr' ); var_dump($func->getParameters());
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
array(4) { [0]=> object(ReflectionParameter)#2 (1) { ["name"]=> string(6) "string" } [1]=> object(ReflectionParameter)#3 (1) { ["name"]=> string(5) "start" } [2]=> object(ReflectionParameter)#4 (1) { ["name"]=> string(6) "length" } [3]=> object(ReflectionParameter)#5 (1) { ["name"]=> string(8) "encoding" } }
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
array(4) { [0]=> object(ReflectionParameter)#2 (1) { ["name"]=> string(3) "str" } [1]=> object(ReflectionParameter)#3 (1) { ["name"]=> string(5) "start" } [2]=> object(ReflectionParameter)#4 (1) { ["name"]=> string(6) "length" } [3]=> object(ReflectionParameter)#5 (1) { ["name"]=> string(8) "encoding" } }

preferences:
74.82 ms | 1429 KiB | 4 Q