Question

我需要遍历一个多维数组并且只检查标题，如果不是以字母开头，如下所示：

Array
(
    [0] => Array
        (
            [letter] =>  
            [id] => 176
        )

    [1] => Array
        (
            [letter] => "
            [id] => 175
        )
.....etc

所以我需要只检查字母，如果没有以a-zA-z开头，我试过这样做，但仍然有一些缺失，

$notMatch = array();
foreach ($data as $value) {
    foreach ($value as $item['title']=>$d) {

       if(!preg_match('/^[a-zA-Z]$/',$d)){
           $notMatch[]=$d;
       }
    }
}

Answer 1

见下面的网址我觉得这对你很有帮助。

<强>更新

Using preg_match on a multidimensional array to return key values arrays

试一试

<?php
$data = array(
    "abc"=>array(
            "label" => "abc",
            "value" => "def",
            "type" => "ghi",
            "desc" => "jkl",
            ),
    "def"=>array(
            "label" => "mno",
            "value" => "qrs",
            "type" => "tuv",
            "desc" => "wxyz",
            ),
    );

$matches = array();
$pattern = "/a/i";  //contains an 'a'
//loop through the data
foreach($data as $key=>$value){
    //loop through each key under data sub array
    foreach($value as $key2=>$value2){
        //check for match.
        if(preg_match($pattern, $value2)){
            //add to matches array.
            $matches[$key]=$value;
            //match found, so break from foreach
            break;
        }
    }
}
echo '<pre>'.print_r($matches, true).'</pre>';
?>

Answer 2

我删除了一个foreach循环并更改了preg_match模式，删除了字符串/行的开头和字符串/行锚点的结尾。

我就这样做了：

// I'm assuming your data array looks something like this:
$data = array(array('title'=>'fjsdoijsdiojsd', 'id'=>3),
                    array('title'=>'oijijsd', 'id'=>5),
                    array('title'=>'09234032', 'id'=>3));

$notMatch = array();
foreach ($data as $value) {
   if(!preg_match('/([a-zA-Z]).*/',$value['title'])){
       $notMatch[]=$value['title'];
       echo 'notmatch! ' . $value['title'];
   }
}

但是，具有更多正则表达式经验的人很可能会为您提供更好的模式。：）

http://codepad.viper-7.com/dvUQoW

循环遍历数组并应用preg_match

2 个答案: