php数组整合
- WBOY原创
- 2016-06-06 20:25:181146浏览
<code class="php"> $arr=[
['id'=>1,'name'=>'php','num'=>3],
['id'=>2,'name'=>'js','num'=>1],
['id'=>1,'name'=>'php','num'=>2],
['id'=>3,'name'=>'python','num'=>2],
];
//怎么对id相同的对num求和并去重，返回的结果为
$arr=[
['id'=>1,'name'=>'php','num'=>5],
['id'=>2,'name'=>'js','num'=>1],
['id'=>3,'name'=>'python','num'=>2],
];</code>
回复内容：
<code class="php"> $arr=[
['id'=>1,'name'=>'php','num'=>3],
['id'=>2,'name'=>'js','num'=>1],
['id'=>1,'name'=>'php','num'=>2],
['id'=>3,'name'=>'python','num'=>2],
];
//怎么对id相同的对num求和并去重，返回的结果为
$arr=[
['id'=>1,'name'=>'php','num'=>5],
['id'=>2,'name'=>'js','num'=>1],
['id'=>3,'name'=>'python','num'=>2],
];</code>
<code>$result = [];
foreach ($arr as $v) {
if (isset($result[$v['id']])) {
$result[$v['id']]['num'] += $v['num'];
}
else {
$result[$v['id']] = $v;
}
}
print_r($result);</code>
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