php - 如何使用html dom获取script标签下的json数据？

Question

这里是我想得到的数据

 <script>
            window['ads_imgs'] = '{"1734275":"https:\/\/media2.lajumate.ro\/media\/i\/cart\/5\/173\/1734275_chevrolet-aveo-5-usi_7.jpg","11570560":"https:\/\/media1.lajumate.ro\/media\/i\/cart\/0\/115\/11570560_audi-a5-sportback-2012-163cp-impecabila-tinuta-in-garaj_14.jpg","3741462":"https:\/\/media1.lajumate.ro\/media\/i\/cart\/2\/374\/3741462_seat-leon-fr-extra-full-dpf_1.jpg","11596338":"https:\/\/media1.lajumate.ro\/media\/i\/cart\/8\/115\/11596338_toyota-auris-12-115-cp-2016_1.jpg","11687842":"https:\/\/media1.lajumate.ro\/media\/i\/cart\/2\/116\/11687842_opel-astra-h-model-2008_1.jpg","11034666":"https:\/\/media1.lajumate.ro\/media\/i\/cart\/6\/110\/11034666_hyundai-tucson-2008_10.jpg","11596195":"https:\/\/media2.lajumate.ro\/media\/i\/cart\/5\/115\/11596195_volkswagen-passat-20-150-cp-2017_1.jpg","10637740":"https:\/\/media1.lajumate.ro\/media\/i\/cart\/0\/106\/10637740_renault-megane-iii-15-dci-90cp-2017_21.jpg","11884407":"https:\/\/media2.lajumate.ro\/media\/i\/cart\/7\/118\/11884407_audi-a4-b7_1.jpg","11889991":"https:\/\/media2.lajumate.ro\/media\/i\/cart\/1\/118\/11889991_vw-touran-19-tdi-105-cp-7-locuri-impecabil-highline_1.jpg","10637645":"https:\/\/media2.lajumate.ro\/media\/i\/cart\/5\/106\/10637645_renault-kadjar-16-dci-130cp-2017_27.jpg","10859634":"https:\/\/media1.lajumate.ro\/media\/i\/cart\/4\/108\/10859634_bmw-z4-35i-cabrio-2009_16.jpg","11889990":"https:\/\/media1.lajumate.ro\/media\/i\/cart\/0\/118\/11889990_vw-passat-20-tdi-170-cp-dsg-automat-highline-full_1.jpg","10803942":"https:\/\/media1.lajumate.ro\/media\/i\/cart\/2\/108\/10803942_mercedes-vito-44_1.jpg","10803920":"https:\/\/media1.lajumate.ro\/media\/i\/cart\/0\/108\/10803920_mercedes-vito-44_11.jpg","11818572":"https:\/\/media1.lajumate.ro\/media\/i\/cart\/2\/118\/11818572_opel-zafira-20l-diesel-7-locuri_4.jpg","11767296":"https:\/\/media1.lajumate.ro\/media\/i\/cart\/6\/117\/11767296_ford-mondeo_4.jpg","9534043":"https:\/\/media2.lajumate.ro\/media\/i\/cart\/3\/953\/9534043_suzuki-sx4_5.jpg","11825640":"https:\/\/media1.lajumate.ro\/media\/i\/cart\/0\/118\/11825640_bmw-520d-f10-automat-m-pachet_1.jpg","11825285":"https:\/\/media2.lajumate.ro\/media\/i\/cart\/5\/118\/11825285_mitshubishi-pajero-pinin-18-gdi_1.jpg","11319696":"https:\/\/media1.lajumate.ro\/media\/i\/cart\/6\/113\/11319696_vw-caddy-4x4-euro5_1.jpg","11358821":"https:\/\/media2.lajumate.ro\/media\/i\/cart\/1\/113\/11358821_bmw-seria-1-e87_1.jpg","11889964":"https:\/\/media1.lajumate.ro\/media\/i\/cart\/4\/118\/11889964_audi-a5-full-led-170cp-schimb-cu-platforma-auto_1.jpg","11675889":"https:\/\/media2.lajumate.ro\/media\/i\/cart\/9\/116\/11675889_audi-a3-s-line-quattro_1.jpg","8642541":"https:\/\/media2.lajumate.ro\/media\/i\/cart\/1\/864\/8642541_toyota-rav-4_1.jpg","11309651":"https:\/\/media2.lajumate.ro\/media\/i\/cart\/1\/113\/11309651_ford-focus_1.jpg","11309545":"https:\/\/media2.lajumate.ro\/media\/i\/cart\/5\/113\/11309545_bmw-318d_1.jpg","11309534":"https:\/\/media1.lajumate.ro\/media\/i\/cart\/4\/113\/11309534_ford-s-max_1.jpg"}';
        </script>

我如何使用 html dom 获取 id 和图像链接。这里的代码我得到了确切的脚本，但我无法得到window['ads_imgs']

                //receiving the data from script tag
               $data = $responseData->find('script',11);

                preg_match("/window['ads_imgs'] = '(.*)'/", $data, $m);
                    print_r($m);
                exit();
            }

标签： phpregexsimple-html-dom

Answer 1

您的正则表达式中有一个小错误。您需要按如下方式转义方括号。您还需要为附件使用大括号，因为这是“数据”中显示的实际哨兵：

preg_match("/window\['ads_imgs'\] = '{.*}'/", $data, $m);

不过，您可能只想要 json 本身。为此，您可以$m[0]按如下方式进行另一个正则表达式匹配：

preg_match("/{.*}/", $m[0], $j_str);

这是一个带有样本数据的完整测试：

$data = "         window['ads_imgs'] = '{\"1734275\":\"https:\/\/media2.lajumate.ro\/media\/i\/cart\/5\/173\/1734275_chevrolet-aveo-5-usi_7.jpg\",\"a\":{\"b\":\"bb\"}}'      ";
preg_match("/window\['ads_imgs'\] = '{.*}'/", $data, $m);
preg_match("/{.*}/", $m[0], $j_str);
$json = json_decode($j_str[0], true);
print_r($json);

输出：

Array
(
    [1734275] => https://media2.lajumate.ro/media/i/cart/5/173/1734275_chevrolet-aveo-5-usi_7.jpg
    [a] => Array
        (
            [b] => bb
        )

)