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给定一个二维数组,例如 $arr $arr = [ 0=>['child_id'=>3,'id'=>1,'addtime'=>'32'], 1=>['child_id'=>3,'id'=>1,'addtime'=>'54'], 2=>['child_id'=>4,'id'=>1,'addtime'=>'89'], 3=>['child_id'=>1,'id'=>1,'addtime'=>'56'], 4=>['child_id'=>3,'id'=>1,'addtime'=>'34'], 5=>['child_id'=>4,'id'=>1,'addtime'=>'12'], 6=>['child_id'=>2,'id'=>1,'addtime'=>'54'] ]; $barr = []; //下面是打印的结果 [ 2 => [ ] 最后,希望能帮助到大家! |
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