如何“正则表达式”选择菜单中的所有选项

Question

样本数据是这样的：

<select name="ctl00$ContentPlaceHolder1$UrunListesi$ctrl0$StokBoyut" id="ctl00_ContentPlaceHolder1_UrunListesi_ctrl0_StokBoyut">
<option value="900061_50x80">50x80 Stok:0</option>
<option value="900067_60x110">60x110 Stok:0</option>
<option value="900037_70x140">70x140 Stok:0</option>
<option value="356593_80 T.Yolluk">80 T.Yolluk Stok:2</option>
<option value="356552_80x150">80x150 Stok:23</option>
</select>

使用以下代码，我只能捕获一个数据：

$regex_select = '/<select name="ctl00\$ContentPlaceHolder1\$UrunListesi\$ctrl([0-9]{1,2})\$StokBoyut" id="ctl00_ContentPlaceHolder1_UrunListesi_ctrl([0-9]{1,2})_StokBoyut">(.*?)/msi';
preg_match_all($regex_select, $get, $d);

如何将所有数据捕获到“SIZExSIZE”（例如 50x80 或 150x230）和“Stock: [0-9]”直到最后一个 Select。

Answer 1

应该尝试使用DOMDocument 对象。

<?php

$html = '<select name="ctl00$ContentPlaceHolder1$UrunListesi$ctrl0$StokBoyut" id="ctl00_ContentPlaceHolder1_UrunListesi_ctrl0_StokBoyut">
<option value="900061_50x80">50x80 Stok:0</option>
<option value="900067_60x110">60x110 Stok:0</option>
<option value="900037_70x140">70x140 Stok:0</option>
<option value="356593_80 T.Yolluk">80 T.Yolluk Stok:2</option>
<option value="356552_80x150">80x150 Stok:23</option>
</select>';
$html  = '<html>'. $html . '</html>';

/*** a new dom object ***/
$dom = new DOMDocument();

/*** load the html into the object ***/
$dom->loadHTML($html);
$pattern = '@\d+x\d+@s'; // Format: (number)x(number)
$stokPattern = '@(Stok:)\d+@s';
foreach ($dom->getElementsByTagName('option') as $row) {
    $attributeValue = $row->getAttribute('value');
    preg_match_all($pattern, $attributeValue);
    if (preg_match($pattern, $attributeValue, $match)) {
        echo $match[0] . '<br/>';
    }

    $text = $row->textContent;
    if (preg_match($stokPattern, $text, $match)) {
        echo $match[0] . '<br/>';
    }
    //echo $row->getAttribute('value') . '<br/>'; //Get value
    //echo $row->textContent . '<br/>'; // Get text
}

示例结果：

50x80
Stok:0
60x110
Stok:0
70x140
Stok:0
Stok:2
80x150
Stok:23

Answer 2

只需将(.*) 更改为([\s\S]*?)<\/select>

所以完整的正则表达式是：<select name="ctl00\$ContentPlaceHolder1\$UrunListesi\$ctrl([0-9]{1,2})\$StokBoyut" id="ctl00_ContentPlaceHolder1_UrunListesi_ctrl([0-9]{1,2})_StokBoyut">([\s\S]*?)<\/select>

Demo

. 不匹配新行，因此您可以使用 [\s\S] 代替匹配任何内容。

一旦你有了你想要的select。使用额外的正则表达式 value=".*?_(\d+(?:x\d+)?)">.*?Stok:(\d+) 获取大小和库存值（第一和第二个捕获组）

例如：

<?php
$re = '/<select name="ctl00\$ContentPlaceHolder1\$UrunListesi\$ctrl([0-9]{1,2})\$StokBoyut" id="ctl00_ContentPlaceHolder1_UrunListesi_ctrl([0-9]{1,2})_StokBoyut">([\s\S]*?)<\/select>/mi';
$str = '
<select name="ctl00$ContentPlaceHolder1$UrunListesi$ctrl0$StokBoyut" id="ctl00_ContentPlaceHolder1_UrunListesi_ctrl0_StokBoyut">
<option value="900061_50x80">50x80 Stok:0</option>
<option value="900067_60x110">60x110 Stok:0</option>
<option value="900037_70x140">70x140 Stok:0</option>
<option value="356593_80 T.Yolluk">80 T.Yolluk Stok:2</option>
<option value="356552_80x150">80x150 Stok:23</option>
</select>

<select>
<option value="dontwantthis">xxxx</option>
</select>

<select name="ctl00$ContentPlaceHolder1$UrunListesi$ctrl0$StokBoyut" id="ctl00_ContentPlaceHolder1_UrunListesi_ctrl0_StokBoyut">
<option value="900061_50x80">50x80 Stok:0</option>
<option value="900067_60x110">60x110 Stok:0</option>
<option value="900037_70x140">70x140 Stok:0</option>
<option value="356593_80 T.Yolluk">80 T.Yolluk Stok:2</option>
<option value="356552_80x150">80x150 Stok:23</option>
</select>

';

preg_match_all($re, $str, $matches);

foreach ($matches[0] as $select) {
    print "I like this select:______________\n";
    print $select . "\n";
    print "The values are:**********\n";
    preg_match_all('/value=".*?_(\d+(?:x\d+)?)[^"]*">.*?Stok:(\d+)/', $select, $values, PREG_SET_ORDER);
    foreach ($values as $value) {
        print "  - $value[1] and Stock=$value[2]\n";
    }
    print "\n\n";
}

看到它在行动here。

结果

The values are:
  - 50x80 and Stock=0
  - 60x110 and Stock=0
  - 70x140 and Stock=0
  - 80 and Stock=2
  - 80x150 and Stock=23