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php数组根据某键值,把相同键值的合并最终生成一个...

php数组根据某一个键值,把相同键值的合并生成一个新的二维数组 源数据: $infos = array( array( 'a' => 36, 'b' => 'xa', 'c' => '2015-08-28 00:00:00', 'd' => '2015/08/438488a00b3219929282e3652061c2e3.png' ), array( 'a' => 3, 'b' => ...

foreach ($b as $nodeIndex => $oneNode) { foreach ($oneNode as $key => $value) { $a[$nodeIndex][$key] += $value; } } print_r($a);

$id = ['A1', 'A2', 'B1', 'B2', 'C1', 'C2']; $key = ['A', 'B', 'C']; foreach ($key as $k) { $$k = []; } foreach ($id as $v) { foreach ($key as $k) { if (stripos($v, $k) === 0) { array_unshift($$k, $v); } } } foreach ($key as $v)...

$b = array();foreach($userinfo as $v) { $b[$v['id']] = $v;}foreach($comment as $k => $v) { $comment[$k]['uid'] = $b[$v['uid']];}

$arr=Array ( [aa] => 0 [bb] => 1 [cc] => 2 [dd] => 3 [ee] => 4 ); foreach($arr as $key=>$val){ $arr[$key]=5; } //用foreach, $key是键名,$val是键值

$b=array();//空数组foreach ($arr as $a){ $b[]=$a['100864'];//添加值}print_r($b);

把'huaka'改成了'huakai'似乎是一个人

ksort()按照键名排序 krsort()按照键名逆序

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