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preg\u match\u所有项目名称和说明

preg-match-all regex php

user5629061 · 技术社区 · 7 年前

CAN

item_name_MyItem1=Nice Title
item_desc_MyItem1=A short description

或

MyItem2_item_name=Nice Title
MyItem2_item_desc=A short description

item_name 但是没有 item_desc

我想匹配

MyItem1
desc 或 name
=

Array
(
    [0] => Array
        (
            [0] => item_name_MyItem1=Nice Title
            [1] => name
            [2] => MyItem1
            [3] => Nice Title
        )

    [1] => Array
        (
            [0] => item_desc_MyItem1=A short description
            [1] => desc
            [2] => MyItem1
            [3] => A short description
        )

    [2] => Array
        (
            [0] => MyItem2_item_name=Nice Title
            [1] => name
            [2] => MyItem2
            [3] => Nice Title
        )

    [3] => Array
        (
            [0] => MyItem2_item_desc=A short description
            [1] => desc
            [2] => MyItem2
            [3] => A short description
        )

    // For example: MyItem3 only has a item_name

    [4] => Array
        (
            [0] => item_name_MyItem3=Nice Title
            [1] => name
            [2] => MyItem3
            [3] => Nice Title
        )
)

到目前为止,我有一个正则表达式: ~(?:(.*)_)?item_(name|desc)(?:_(.*))?=(.*)~i' 我用它 PREG_SET_ORDER

这个正则表达式的问题是,由于optionals,它在每个数组上都有一个空值 (?:(.*)_)? (?:_(.*))?

希望有人能帮我修复这个正则表达式,使它符合我的预期结果。

3 回复 | 直到 7 年前

Justinas 7 年前

逐行读取文件并按拆分 =

$handle = fopen("inputfile.txt", "r");
$results = [];

if ($handle) {
    while (($line = fgets($handle)) !== false) {
        list($name, $desc) = explode('=', $line);

        $results[] = [
            $line,
            strpos($name, 'name') !== false ? 'name' : 'desc',
            $name,
            $desc
        ];
    }

    fclose($handle);
} else {
    // error opening the file.
}

mickmackusa Tom Green 7 年前

贾斯汀的回答让我很困惑。它看起来不应该起作用,所以我会发布一些我认为有效的东西。

$handle=fopen("inputfile.txt","r");
if($handle){
    while(($line=fgets($handle))!==false){
        $dyad=explode("=",$line);  // split in two parts
        $attrs=explode("_",$dyad[0]);  // split the first part into 3 parts
        if(strpos('item',$attrs[0])===0){
            $result[]=[$attrs[2],$attrs[1],$dyad[1]];
        }else{
            $result[]=[$attrs[0],$attrs[2],$dyad[1]];
        }
    }
    var_export($result);
    fclose($handle);
}

demo link with some test data .