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A html halaman yang akan dirangkak:

$str2 = <<<EOT
<p topClassName='top1' topSwitch='on'  productId='2256' productName='⑧北京漢奧汽配有限公司' class='productPicListForm' id='module406product2256' faiWidth='160' faiHeight='101' faiWidthOr='600' faiHeightOr='382'>
    <table id='formTable2256_module406' class='formTable' cellpadding='0' cellspacing='0'>

        <tr>
            <td class='imgp'>
                <table cellpadding='0' cellspacing='0'>
                    <tr>
                        <td>
                            <a hidefocus='true' href='h-pd-2256-2_406.html' target='_blank'>
                                <img alt='⑧北京漢奧汽配有限公司' title='' src='http://5003100.s21i-5.faiusr.com/2/ABUIABACGAAggsfqwAUotY6_qgUw2AQ4-gI!160x160.jpg'  />
                            </a>
                        </td>
                    </tr>
                </table>
            </td>

            <td style='' class='propList'>
                <p style='' class='propp productName    '>
                    <a class='fk-productName' hidefocus='true' href='h-pd-2256-2_406.html' target='_blank' title='⑧北京漢奧汽配有限公司'>⑧北京漢奧汽配有限公司</a>
                </p>

                <p class='propp productProp6    '>
                    <span class='propName fk-prop-name'>主營(yíng)：</span>
                    <span class='propValue fk-prop-other'  style='text-decoration:none;font-family:微軟雅黑;font-weight:normal;'>大眾 新速騰 新邁騰 新桑塔納 新捷達(dá) CC 新帕薩特 新寶來(lái) 收事故車及殘值（郭京漢）</span>
                </p>

                <p class='propp productProp4    '>
                    <span class='propName fk-prop-name'>地址：</span>
                    <span class='propValue fk-prop-other'  style='text-decoration:none;font-family:微軟雅黑;font-weight:normal;'>城環(huán)城B-01號(hào)</span>
                </p>
            </td>
        </tr>

    </table>
</p>
EOT;

B. Regex merangkak yang saya tulis:

<?php 
// 去掉開(kāi)頭和結(jié)尾多余的無(wú)用字符
$str2     = trim($str2);
// 去掉換行符
$str2     = preg_replace('/\r\n|\n\r|\r|\n/' , '' , $str2);
// 抓取正則

$reg_list = "/<ps*topClassName='top1's*topSwitch='on's*productId='(d+)'s*productName='[x7f-xff]+'s*class='productPicListForm's*id='[A-z0-9]+'s*faiWidth='d+'s*faiHeight='d+'s*faiWidthOr='d+'s*faiHeightOr='d+'>s*<tables*id='w+'s*class='formTable's*cellpadding='d*'s*cellspacing='d+'>s*<tr>s*<tds*class='imgp'>s*<tables*cellpadding='d+'s*cellspacing='d+'>s*<tr>s*<td>s*<as*hidefocus='true's*href='[A-z0-9. -_]+'s*target='(_blank|_self)'>s*<imgs*alt='([x7f-xff]+)'s*title='[x7f-xffA-z0-9-]*'s*src='((http|https)://[A-z0-9./!-]+)'s*/>s*</a>s*</td>s*</tr>s*</table>s*</td>s*<tds*style='[A-z0-9:-_#]*'s*class='propList'>s*<tds*style='[A-z0-9:-_#]*'s*class='propList'>s*<p style='[A-z0-9:-_#]*' class='propps*productNames*'>s*<as*class='fk-productName's*hidefocus='true's*href='([A-z0-9-._]+)'s*target='(_blank|_self)'s*title='[x7f-xff]+'>[x7f-xff]+</a>s*</p>s*<ps*class='propps*productPropd*s*'>s*<spans*class='propNames*fk-prop-name'>主營(yíng)：</span>s*<spans*class='propValues*fk-prop-other's*style='[A-z0-9x7f-xff: -_#;]*'>([x7f-xff ]+_-.)</span>s*</p>s*<ps*class='propps*productProp4s*'>s*<spans*class='propNames*fk-prop-name'>地址：</span>s*<spans*class='propValues*fk-prop-other's*style='[A-z0-9x7f-xff: -_#;]*'>([x7f-xff -_.]+)</span>s*</p>s*</td>s*</td>s*</tr>s*</table>s*</p>/";

Dipaparkan dalam editor (tangkapan skrin):

Sebab mengapa ia begitu rumit adalah kerana saya ingin mendapatkan beberapa kandungan:

Inilah perkara utama. Ia sangat rumit sehingga mustahil untuk menyahpepijat regex supaya ia boleh menangkap kandungan yang saya mahukan dengan betul anda mahukan? ?