<?php $arr1 = range(0,10); $arr2 = array('key1'=>'value1','key2'=>'value2','key3'=>'value3'); $test1 = array_filter($arr1,function($val) { return $val[0]; }); echo implode('',$arr1)."\t"; echo implode('',$arr2)."\t"; print_r($test1);
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