从字符串中的引号中提取时如何包含等号和引号？

Question

我有这个字符串：

$shortcode = '[csvtohtml_create include_rows="1-10" 
debug_mode="no" source_type="guess" path="largecsv" 
source_files="test?output=csv"  csv_delimiter="," ]'

我想检索属性及其值，甚至是引号内的等号或空格。

这个问题是基于这个问题：How to explode a string but not within quotes in php?

我有这个代码：

$args = preg_split('/"[^"]+"(*SKIP)(*F)|\h+/', $shortcode);
   
$attrs = [];
foreach( $args as $item )
{
    //Only use those items in array $args with = sign
    if ( strpos( $item , '=' ) !== false )
    {
        $sep = explode( '=', $item );
        $key = $sep[0];
        $value = $sep[1];
        $attrs[$key] = str_replace( '"', '', $value );
    }
}

$args = explode( '=', $sc );

我得到这个结果：（source_files without output=csv）

Array attrs
      "include_rows" => "1-10"
      "debug_mode" => "no"
      "source_type" => "guess"
      "path" => "largecsv"
      "source_files" => "test.csv?output"
      "csv_delimiter" => ","
 

我想要的结果是：

Array attrs
      "include_rows" => "1-10"
      "debug_mode" => "no"
      "source_type" => "guess"
      "path" => "largecsv"
      "source_files" => "test.csv?output=csv"
      "csv_delimiter" => ","
 

等等……

我想我应该在这里的某个地方输入等号（或者是？=），但正则表达式不是我的强项......

$args = preg_split('/"[^"]+"(*SKIP)(*F)|\h+/', $shortcode);

Answer 1

可能更容易获得匹配项。然后你可以做任何事情。我把它变成一个查询字符串并解析成一个数组：

preg_match_all('/[^\s=]+="[^"]*"/', $shortcode, $result);
parse_str(implode('&', $result[0]), $result);

现在$result 产生：

Array
(
    [include_rows] => "1-10"
    [debug_mode] => "no"
    [source_type] => "guess"
    [path] => "largecsv"
    [source_files] => "test?output=csv"
    [csv_delimiter] => ","
)

要去掉引号，然后将其解析为 ini 设置：

$result = parse_ini_string(implode("\n", $result[0]));

产量：

Array
(
    [include_rows] => 1-10
    [debug_mode] => no
    [source_type] => guess
    [path] => largecsv
    [source_files] => test?output=csv
    [csv_delimiter] => ,
)

Answer 2

您在爆炸等号方面走在了正确的轨道上。这个实现通过array_shift 来获取密钥，然后implodes 将数组的其余部分放在一起。

<?php

$sc = '[csvtohtml_create include_rows="1-10" 
debug_mode="no" source_type="guess" path="largecsv" 
source_files="test?output=csv"  csv_delimiter="," ]';

$args = array_filter(array_map('trim', preg_split('/"[^"]+"(*SKIP)(*F)|\h+/', $sc)));
array_shift($args); // remove [csvtohtml
array_pop($args); // remove ]

$output = [];
foreach ($args as $arg) {
    $explode = explode('=', $arg);
    $key = array_shift($explode);
    $value = str_replace('"', '', implode('=', $explode)); // remove str_replace if you want to keep the extra set of quotes
    $output[$key] = $value;
}

print_r($output);

结果

Array
(
    [include_rows] => 1-10
    [debug_mode] => no
    [source_type] => guess
    [path] => largecsv
    [source_files] => test?output=csv
    [csv_delimiter] => ,
)

Answer 3

您可以使用匹配属性名称及其值

([^\s=]+)=(?|"([^"]*)"|(\S+))

请参阅regex demo。 详情：

• ([^\s=]+) - 第 1 组：除空格和 = 字符以外的一个或多个字符
• = - = 符号
• (?|"([^"]*)"|(\S+)) - 分支重置组：
  • "([^"]*)" - "，然后是除 " 之外的任何零个或多个字符被捕获到第 1 组，然后是 "
  • | - 或
  • (\S+) - 第 2 组：任何一个或多个非空白字符

见PHP demo：

$sc = '[csvtohtml_create include_rows="1-10" 
debug_mode="no" source_type="guess" path="largecsv" 
source_files="test?output=csv"  csv_delimiter="," ]';
if (preg_match_all('~([^\s=]+)=(?|"([^"]*)"|(\S+))~', $sc, $ms)) {
    print_r(array_combine($ms[1],$ms[2]));
}

输出：

Array
(
    [include_rows] => 1-10
    [debug_mode] => no
    [source_type] => guess
    [path] => largecsv
    [source_files] => test?output=csv
    [csv_delimiter] => ,
)