PHP中的字符串解析 [英] String parsing in PHP

问题描述

我正在尝试解析PHP中的字符串:

I am trying to parse a string in PHP:

 -father_name "John" -father_weight 44.50 
    -kid >name "Marko" >age 12
    -kid >name "Sevda" >age 17
    -kid >name "Nathan" >age 19

主要有两种形式:

1. 属性(例如-father，-weight，-kid)
2. 子属性(例如> name，> age)

注意:属性不固定，也不总是用单个空格隔开

Note: Attributes are NOT FIXED and NOT ALWAYS SEPERATED BY single space

它们的值有两种类型:

1. 字符串(如"Marko")
2. 整数或十进制(如12.00)

输出将是:

 $array['attributes'] = array('father_name ','father_weight ');
 $array['attributes']['kid'][] = array('name' => "Marko", 'age' => 12);
 $array['attributes']['kid'][] = array('name' => "Sevda", 'age' => 17);
 $array['attributes']['kid'][] = array('name' => "Nathan", 'age' => 19);

它应该分别返回 FORMS (属性和子属性)和 VALUES .

It should return FORMS (attrs and sub-attrs) and VALUES SEPARATELY.

如何巧妙地在 PHP 中解析此行?

How can I parse this line in PHP cleverly?

最后注:我为此找到了解决方案:YAML.

Last Note: Solution I found for this: YAML.

推荐答案

尝试一下:

function parse_attributes($string, $separators = array('-','>'), $level = 0){
    $attributes = explode($separators[$level], $string);
    $attrs = array();
    $ret_arr = array();
    foreach($attributes as $attribute){
        if(!empty($attribute)){
            $ex_attr = explode(' ',$attribute);
            if(!empty($ex_attr[1])){
                if(count($separators) > $level && strpos($attribute, $separators[$level+1])){
                    $ret = parse_attributes($attribute, $separators, $level+1);
                    array_push($ret_arr, $ret);
                }
                if (empty($ret_arr))
                    $attrs[$ex_attr[0]] = str_replace('"', '', $ex_attr[1]);
                else
                    $attrs[$ex_attr[0]] = $ret_arr;
            }
        }
    }
    return $attrs;
}

使用:

$returned = parse_attributes('-father_name "John" -father_weight 44.50 -kid >name "Marko" >age 12 -kid >name "Sevda" >age 17 -kid >name "Nathan" >age 19');

print_r($returned);

返回:

Array
(
    [father_name] => John
    [father_weight] => 44.50
    [kid] => Array
        (
            [0] => Array
                (
                    [name] => Marko
                    [age] => 12
                )

            [1] => Array
                (
                    [name] => Sevda
                    [age] => 17
                )

            [2] => Array
                (
                    [name] => Nathan
                    [age] => 19
                )

        )

)

并使用:

echo($returned['kid'][0]['name']);

返回:

Marko

注意:您可以指定更多的分隔符数组项目，这是您具有的每个属性级别的项目.

NOTE: You can specify more separator array items, an item for each attribute level you have.

希望这会有所帮助.

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