在PHP中递归搜索数组以获得密钥匹配或值匹配？

问题描述：

I have an array that can be many levels deep for example

'For Sale' => array(
        'Baby & Kids Stuff' => array(
            'Car Seats & Baby Carriers',
                            ),
        ),
'For Rent' => array(
        'Other' => array(
            'Baby Clothes',
        ),
         'Prices' => 'hhhhhh',
                   ),

What I am trying to do is search both the array keys and values to match a string, I have come up with this so far but it isn't working...

// validate a category
public function isValid($category, $data = false) {

    if(!$data) {
        $data = $this->data;
    }
    foreach($data as $var => $val) {
        if($var === $category) {
            return true;
        } elseif(is_array($val)) {
            $this->isValid($category, $data[$var]);
        } elseif($val === $category) {
            return true;
        }
    }
}

I don't know what I am doing wrong, many thanks.

我有一个可以深层次的数组，例如 p>

 '待售'=＆gt; 阵列（
'Baby＆amp; Kids Stuff'=＆gt; array（
'Car Seats＆amp; Baby Carriers'，
），
），
'For Rent'=＆gt; 数组（
'其他'=＆gt;数组（
'婴儿服装'，
），
'价格'=＆gt;'hhhhhh'，
），
  code>  pre> \  n 
 我要做的是搜索数组键和值以匹配字符串，到目前为止我已经提出了这个但是它没有用...  p> 
 
  
  //验证类别
公共函数isValid（$ category，$ data = false）{
 
 if if（！$ data）{
 $ data = $ this-＆gt; data; 
  } 
 foreach（$ data as $ var =＆gt; $ val）{
 if（$ var === $ category）{
 return true; 
} elseif（is_array（$ val））{
 $  this-＆gt; isValid（$ category，$ data [$ var]）; 
} elseif（$ val === $ category）{
 return true; 
} 
} 
} 
  code  >  pre> 
 
 我不知道自己做错了什么，非常感谢。 p> 
  div>

答

if you're using PHP >= 5.1.0 than it's better to use RecursiveArrayIterator / RecursiveIteratorIterator

$arr = array(
    'For Sale' => array(
        'Baby & Kids Stuff' => array(
            'Car Seats & Baby Carriers',
        ),
    ),
    'For Rent' => array(
        'Other' => array(
            'Baby Clothes',
        ),
        'Prices' => 'hhhhhh',
    ),
);

function isValid($category, array $data)
{
    $iterator = new RecursiveIteratorIterator(new RecursiveArrayIterator($data), RecursiveIteratorIterator::CHILD_FIRST);

    foreach ($iterator as $key => $value) {
        if (is_string($key) && ($category == $key)) {
            return true;
        }
        if (is_string($value) && ($category == $value)) {
            return true;
        }
    }
    return false;
}

var_dump(isValid('Baby Clothes', $arr));

答

} elseif (is_array($val)) {
    return $this->isValid($category, $val);
    ^^^^^^
}

You need to return even from a recursive call.

答

// validate a category public function isValid($category, $data = false) {

if(!$data) {
    $data = $this->data;
}
foreach($data as $var => $val) {
    if($var === $category) {
        return true;
    } elseif(is_array($val)) {
        return $this->isValid($category, $data[$var]);
    } elseif($val === $category) {
        return true;
    }
}
return false;
}

在PHP中递归搜索数组以获得密钥匹配或值匹配？

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