<?php function array_some(callable $callback,$arr){ foreach($arr as $ele){ if(call_user_func($callback,$ele)){ return true; } } return false; } function array_every(callable $callback,$arr){ foreach($arr as $ele){ if(!call_user_func($callback,$ele)){ return false; } } return true; } function my_callback($ele){ return $ele % 2 == 0; } var_dump(array_some('my_callback',[1,2,3,4,5,6,7,8,9,10])); var_dump(array_some('my_callback',[1,3,5,7])); var_dump(array_every('my_callback',[1,2,3,4,5,6,7,8,9,10])); var_dump(array_every('my_callback',[0,2,4,6,8]));
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