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光看标题可能不能明白什么意思，具体还是要看例子
大白话就是我有一个数组$arr1里面有个“xq”字段,我需要将“xq”字段提出来，有多少个“xq”字段里的内容就合并多少条数据
$arr1 = [["id" => 76,"changmc" => "场一","riqi" => "2021-09-26","jiaji" => 2,"zhuangtai" => 1,"czrxm" => "张三","shrxm" => null,"xq" => [["xqid" => 148,"liaohao" => 1,"liaotaid" => 3,"zhongliang" => 10,"zhongliang1" => null,"ltmingcheng" => "I1",],["xqid" => 149,"liaohao" => 1,"liaotaid" => 6,"zhongliang" => 20,"zhongliang1" => null,"ltmingcheng" => "G1",]]], ["id" => 77,"changmc" => "场二","riqi" => "2021-09-26","jiaji" => 2,"zhuangtai" => 1,"czrxm" => "李四","shrxm" => null,"xq" => [["xqid" => 150,"liaohao" => 1,"liaotaid" => 3,"zhongliang" => 10,"zhongliang1" => null,"ltmingcheng" => "I1",],["xqid" => 151,"liaohao" => 1,"liaotaid" => 6,"zhongliang" => 20,"zhongliang1" => null,"ltmingcheng" => "G1",]]]];$arr2 = [];foreach ($arr1 as $item) {foreach ($item['xq'] as $values) {$arr2[] = array_merge($item, $values);}}dump($arr2);
合并后
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