PHP在连接键时将嵌套数组转换为单个数组? [英] PHP convert nested array to single array while concatenating keys?
本文介绍了PHP在连接键时将嵌套数组转换为单个数组?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
这是一个示例数组:
$foo = array(
'employer' => array(
'name' => 'Foobar Inc',
'phone' => '555-555-5555'
),
'employee' => array(
'name' => 'John Doe',
'phone' => '555-555-5556',
'address' => array(
'state' => 'California',
'zip' => '90210'
)
),
'modified' => '2009-12-01',
);
我想得到这样的结果:
$fooCompressed = array(
'employer_name' => 'Foobar Inc',
'employer_phone' => '555-555-5555',
'employee_name' => 'John Doe',
'employee_phone' => '555-555-5556'
'employee_address_state' => 'California',
'employee_address_zip' => '90210',
'modified' => '2009-12-01'
)
我将如何编写递归函数来处理这个问题?
How would I go about writing a recursive function to handle this?
推荐答案
是这样的:
function makeNonNestedRecursive(array &$out, $key, array $in){
foreach($in as $k=>$v){
if(is_array($v)){
makeNonNestedRecursive($out, $key . $k . '_', $v);
}else{
$out[$key . $k] = $v;
}
}
}
function makeNonNested(array $in){
$out = array();
makeNonNestedRecursive($out, '', $in);
return $out;
}
// Example
$fooCompressed = makeNonNested($foo);
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