PHP数组计算 如下数组$arr,求方法随机对数组的值相加,求和为指定值:如...答:php$arr = [1, 2, 3, 4, 5, 6, 7, 8, 9];/** * 根据某个值对数组中的元素进行分组 */function getGroupBySum($arr, $sum) { $len = count($arr); $result = []; // for 1 for($i = 0; $i < $len; $i++) { // for 2 for($j = 1; $j...
php 把数组按条件分成不同的数组答:arr1 = array("In/4833895_0001.jpg","In/4834113_0002.jpg","Out/4834223_0001.jpg","In/4834301_0003.jpg","Out/4834442_0002.jpg","In/4834520_0004.jpg","Out/4834598_0003.jpg","In/4834723_0005.jpg","Out/4834817_0004.jpg","In/4834863_0006.jpg","Out/4835004_0005.jpg","...
php怎样把一个数组放入另一个数组的子数组里面答:(Array ('a' => 1,'b' => 2,),Array ('a' => 's','b' => 's',),);arr2 = Array (Array ('c'=>array('a','b','c'),),Array ('c'=>array(1,2,3),),);foreach($arr2 as $key=>$value) { foreach($value as $k=>$v) { arr1[$key][$k] = $v;}...