PHP method to intercept all <a> tags in the web page source code and form an array

If we need to obtain the source code of a web page and get some information we need from it, such as the 3499910bf9dac5ae3c52d5ede7383485 tag, or all the content in the e388a4556c0f65e1904146cc1a846beeff6d136ddc5fdfeffaf53ff6ee95f185 tag. We have to intercept, but the PHP interception function is quite fucked. Forgive the blogger for being a novice. At least I searched for a long time and did not find a function to intercept the string to the left. Like other people's answers, substr() is used to obtain the string. The position function is then intercepted. All I can say is that I tried it and it didn’t work. Then there are some various methods, all of which are impractical and troublesome. Next I will talk about a method, which is quite buggy and quite easy to use.

$url = "http://www.texnet.com.cn/product";
$result = file_get_contents($url);
$str = intercept_str($result, &#39;粘上你要开始截取的字符串比如:<p class="productsearch">&#39;, &#39;粘上结束时刻的字符串比如：<p class="greenblock1">&#39;, 1);
//需要先去除所有的换行符、制表符、回车等等，html源文件由于上述符号的存在会造成无法匹配。
$hre = preg_replace("/[\t\n\r]+/","",$str);
$reg=&#39;/<a .*?>.*?<\/a>/&#39;;//这个正则可以自己发挥，博主只是随便放了个匹配<a>标签的
preg_match_all($reg,$hre,$aarray);

//然后就可以打印了呀

dump($aarray);

Look at the result directly:

array(1) {
  [0] => array(96) {
    [0] => string(195) "<a href="http://jinxiang.cn.texnet.com.cn" title="桐乡市锦翔纺织有限公司" target="_blank" class="L14 bigblue2">     <font color=&#39;#FF0000&#39;>桐乡市</font>锦翔纺织有限公司  </a>"
    [1] => string(115) "<a href="http://jinxiang.cn.texnet.com.cn/pdetail--840799.html" title="绢丝 " target="_blank" >     绢丝   </a>"
    [2] => string(113) "<a href="http://jinxiang.cn.texnet.com.cn/pdetail--840798.html" title="绢丝" target="_blank" >     绢丝  </a>"
    [3] => string(131) "<a href="http://jinxiang.cn.texnet.com.cn/pdetail--840802.html" title="羊毛混纺纱" target="_blank" >     羊毛混纺纱  </a>"
    [4] => string(131) "<a href="http://jinxiang.cn.texnet.com.cn/pdetail--840800.html" title="绢丝混纺纱" target="_blank" >     绢丝混纺纱  </a>"
    [5] => string(119) "<a href="http://jinxiang.cn.texnet.com.cn/pdetail--840801.html" title="毛腈纱" target="_blank" >     毛腈纱  </a>"
    [6] => string(122) "<a href="http://jinxiang.cn.texnet.com.cn" target="_blank" class="green L130 english">http://jinxiang.cn.texnet.com.cn</a>"
    [7] => string(130) "<a target="_blank" href="/enquiry/?t=company&id=2056"><img src="/images/enquire.gif" style="cursor:pointor" align="absbottom"></a>"
    [8] => string(205) "<a href="http://zjhtfs.cn.texnet.com.cn" title="桐乡市海通毛绒服饰有限公司" target="_blank" class="L14 bigblue2">     <font color=&#39;#FF0000&#39;>桐乡市</font>海通毛绒服饰有限公司  </a>"
    [9] => string(111) "<a href="http://zjhtfs.cn.texnet.com.cn/pdetail--939047.html" title="粗纱" target="_blank" >     粗纱  </a>"
    [10] => string(117) "<a href="http://zjhtfs.cn.texnet.com.cn/pdetail--939048.html" title="粗纺纱" target="_blank" >     粗纺纱  </a>"
    [11] => string(135) "<a href="http://zjhtfs.cn.texnet.com.cn/pdetail--939033.html" title="粗纺羊仔纱线" target="_blank" >     粗纺羊仔纱线  </a>"
    [12] => string(117) "<a href="http://zjhtfs.cn.texnet.com.cn/pdetail--939043.html" title="丝羊绒" target="_blank" >     丝羊绒  </a>"
    [13] => string(117) "<a href="http://zjhtfs.cn.texnet.com.cn/pdetail--939046.html" title="羊绒纱" target="_blank" >     羊绒纱  </a>"
    [14] => string(118) "<a href="http://zjhtfs.cn.texnet.com.cn" target="_blank" class="green L130 english">http://zjhtfs.cn.texnet.com.cn</a>"
    [15] => string(129) "<a target="_blank" href="/enquiry/?t=company&id=768"><img src="/images/enquire.gif" style="cursor:pointor" align="absbottom"></a>"
    [16] => string(193) "<a href="http://xtknit.cn.texnet.com.cn" title="桐乡市新拓针织有限公司" target="_blank" class="L14 bigblue2">     <font color=&#39;#FF0000&#39;>桐乡市</font>新拓针织有限公司  </a>"
    [17] => string(117) "<a href="http://xtknit.cn.texnet.com.cn/pdetail--750913.html" title="卫衣布" target="_blank" >     卫衣布  </a>"
    [18] => string(117) "<a href="http://xtknit.cn.texnet.com.cn/pdetail--750931.html" title="烂花布" target="_blank" >     烂花布  </a>"
    [19] => string(117) "<a href="http://xtknit.cn.texnet.com.cn/pdetail--750927.html" title="烫金布" target="_blank" >     烫金布  </a>"
    [20] => string(123) "<a href="http://xtknit.cn.texnet.com.cn/pdetail--750907.html" title="彩条汗布" target="_blank" >     彩条汗布  </a>"
    [21] => string(111) "<a href="http://xtknit.cn.texnet.com.cn/pdetail--750908.html" title="汗布" target="_blank" >     汗布  </a>"
    [22] => string(118) "<a href="http://xtknit.cn.texnet.com.cn" target="_blank" class="green L130 english">http://xtknit.cn.texnet.com.cn</a>"
    [23] => string(129) "<a target="_blank" href="/enquiry/?t=company&id=828"><img src="/images/enquire.gif" style="cursor:pointor" align="absbottom"></a>"
    [24] => string(193) "<a href="http://zjyuxi.cn.texnet.com.cn" title="桐乡市玉溪针织有限公司" target="_blank" class="L14 bigblue2">     <font color=&#39;#FF0000&#39;>桐乡市</font>玉溪针织有限公司  </a>"
    [25] => string(117) "<a href="http://zjyuxi.cn.texnet.com.cn/pdetail--691497.html" title="印花布" target="_blank" >     印花布  </a>"
    [26] => string(135) "<a href="http://zjyuxi.cn.texnet.com.cn/pdetail--691378.html" title="人棉氨纶汗布" target="_blank" >     人棉氨纶汗布  </a>"
    [27] => string(111) "<a href="http://zjyuxi.cn.texnet.com.cn/pdetail--691383.html" title="汗布" target="_blank" >     汗布  </a>"
    [28] => string(141) "<a href="http://zjyuxi.cn.texnet.com.cn/pdetail--691281.html" title="人棉氨纶印花布" target="_blank" >     人棉氨纶印花布  </a>"
    [29] => string(116) "<a href="http://zjyuxi.cn.texnet.com.cn/pdetail--10418.html" title="罗马布" target="_blank" >     罗马布  </a>"
    [30] => string(118) "<a href="http://zjyuxi.cn.texnet.com.cn" target="_blank" class="green L130 english">http://zjyuxi.cn.texnet.com.cn</a>"
    [31] => string(130) "<a target="_blank" href="/enquiry/?t=company&id=1589"><img src="/images/enquire.gif" style="cursor:pointor" align="absbottom"></a>"
    [32] => string(192) "<a href="http://zhonglisilk.cn.texnet.com.cn" title="桐乡市洲泉众力丝织厂" target="_blank" class="L14 bigblue2">     <font color=&#39;#FF0000&#39;>桐乡市</font>洲泉众力丝织厂  </a>"
    [33] => string(129) "<a href="http://zhonglisilk.cn.texnet.com.cn/pdetail--1013163.html" title="亚麻彩条" target="_blank" >     亚麻彩条  </a>"
    [34] => string(129) "<a href="http://zhonglisilk.cn.texnet.com.cn/pdetail--1013180.html" title="亚麻素色" target="_blank" >     亚麻素色  </a>"
    [35] => string(147) "<a href="http://zhonglisilk.cn.texnet.com.cn/pdetail--1013190.html" title="亚麻烫金针织布" target="_blank" >     亚麻烫金针织布  </a>"
    [36] => string(129) "<a href="http://zhonglisilk.cn.texnet.com.cn/pdetail--1013192.html" title="亚麻印花" target="_blank" >     亚麻印花  </a>"
    [37] => string(141) "<a href="http://zhonglisilk.cn.texnet.com.cn/pdetail--1013453.html" title="人棉竹节汗布" target="_blank" >     人棉竹节汗布  </a>"
    [38] => string(128) "<a href="http://zhonglisilk.cn.texnet.com.cn" target="_blank" class="green L130 english">http://zhonglisilk.cn.texnet.com.cn</a>"
    [39] => string(130) "<a target="_blank" href="/enquiry/?t=company&id=1918"><img src="/images/enquire.gif" style="cursor:pointor" align="absbottom"></a>"
    [40] => string(207) "<a href="http://zjqinghe.cn.texnet.com.cn" title="桐乡市清瀛家居用品有限公司" target="_blank" class="L14 bigblue2">     <font color=&#39;#FF0000&#39;>桐乡市</font>清瀛家居用品有限公司  </a>"
    [41] => string(112) "<a href="http://zjqinghe.cn.texnet.com.cn/pdetail--45530.html" title="靠垫" target="_blank" >     靠垫  </a>"
    [42] => string(118) "<a href="http://zjqinghe.cn.texnet.com.cn/pdetail--50861.html" title="三件套" target="_blank" >     三件套  </a>"
    [43] => string(113) "<a href="http://zjqinghe.cn.texnet.com.cn/pdetail--712086.html" title="被子" target="_blank" >     被子  </a>"
    [44] => string(113) "<a href="http://zjqinghe.cn.texnet.com.cn/pdetail--712130.html" title="毯子" target="_blank" >     毯子  </a>"
    [45] => string(113) "<a href="http://zjqinghe.cn.texnet.com.cn/pdetail--712159.html" title="垫子" target="_blank" >     垫子  </a>"
    [46] => string(122) "<a href="http://zjqinghe.cn.texnet.com.cn" target="_blank" class="green L130 english">http://zjqinghe.cn.texnet.com.cn</a>"
    [47] => string(130) "<a target="_blank" href="/enquiry/?t=company&id=1930"><img src="/images/enquire.gif" style="cursor:pointor" align="absbottom"></a>"
    [48] => string(203) "<a href="http://hlzr.cn.texnet.com.cn" title="桐乡市华灵丝绸有限责任公司" target="_blank" class="L14 bigblue2">     <font color=&#39;#FF0000&#39;>桐乡市</font>华灵丝绸有限责任公司  </a>"
    [49] => string(110) "<a href="http://hlzr.cn.texnet.com.cn/pdetail--1121956.html" title="印花" target="_blank" >     印花  </a>"
    [50] => string(122) "<a href="http://hlzr.cn.texnet.com.cn/pdetail--1121947.html" title="长毛植绒" target="_blank" >     长毛植绒  </a>"
    [51] => string(122) "<a href="http://hlzr.cn.texnet.com.cn/pdetail--1121940.html" title="鞋材面料" target="_blank" >     鞋材面料  </a>"
    [52] => string(122) "<a href="http://hlzr.cn.texnet.com.cn/pdetail--1121933.html" title="服装面料" target="_blank" >     服装面料  </a>"
    [53] => string(116) "<a href="http://hlzr.cn.texnet.com.cn/pdetail--1121884.html" title="仿羊绒" target="_blank" >     仿羊绒  </a>"
    [54] => string(114) "<a href="http://hlzr.cn.texnet.com.cn" target="_blank" class="green L130 english">http://hlzr.cn.texnet.com.cn</a>"
    [55] => string(130) "<a target="_blank" href="/enquiry/?t=company&id=2190"><img src="/images/enquire.gif" style="cursor:pointor" align="absbottom"></a>"
    [56] => string(198) "<a href="http://chenhuisilk.cn.texnet.com.cn" title="桐乡市晨晖丝绸有限公司" target="_blank" class="L14 bigblue2">     <font color=&#39;#FF0000&#39;>桐乡市</font>晨晖丝绸有限公司  </a>"
    [57] => string(135) "<a href="http://chenhuisilk.cn.texnet.com.cn/pdetail--1521909.html" title="大提花面料" target="_blank" >     大提花面料  </a>"
    [58] => string(135) "<a href="http://chenhuisilk.cn.texnet.com.cn/pdetail--1522013.html" title="人丝美丽绸" target="_blank" >     人丝美丽绸  </a>"
    [59] => string(135) "<a href="http://chenhuisilk.cn.texnet.com.cn/pdetail--1522029.html" title="涤丝斜纹绸" target="_blank" >     涤丝斜纹绸  </a>"
    [60] => string(129) "<a href="http://chenhuisilk.cn.texnet.com.cn/pdetail--1522061.html" title="装饰里布" target="_blank" >     装饰里布  </a>"
    [61] => string(122) "<a href="http://chenhuisilk.cn.texnet.com.cn/pdetail--612727.html" title="小提花" target="_blank" >     小提花  </a>"
    [62] => string(128) "<a href="http://chenhuisilk.cn.texnet.com.cn" target="_blank" class="green L130 english">http://chenhuisilk.cn.texnet.com.cn</a>"
    [63] => string(130) "<a target="_blank" href="/enquiry/?t=company&id=2434"><img src="/images/enquire.gif" style="cursor:pointor" align="absbottom"></a>"
    [64] => string(193) "<a href="http://jhknit.cn.texnet.com.cn" title="桐乡市嘉鸿针织有限公司" target="_blank" class="L14 bigblue2">     <font color=&#39;#FF0000&#39;>桐乡市</font>嘉鸿针织有限公司  </a>"
    [65] => string(152) "<a href="http://jhknit.cn.texnet.com.cn/pdetail--41316.html" title="彩条丝光棉珠地网眼" target="_blank" >     彩条丝光棉珠地网眼  </a>"
    [66] => string(140) "<a href="http://jhknit.cn.texnet.com.cn/pdetail--41315.html" title="烫银纯亚麻汗布" target="_blank" >     烫银纯亚麻汗布  </a>"
    [67] => string(146) "<a href="http://jhknit.cn.texnet.com.cn/pdetail--41313.html" title="双丝光棉彩条罗纹" target="_blank" >     双丝光棉彩条罗纹  </a>"
    [68] => string(134) "<a href="http://jhknit.cn.texnet.com.cn/pdetail--41322.html" title="彩条氨纶汗布" target="_blank" >     彩条氨纶汗布  </a>"
    [69] => string(116) "<a href="http://jhknit.cn.texnet.com.cn/pdetail--41310.html" title="罗马布" target="_blank" >     罗马布  </a>"
    [70] => string(118) "<a href="http://jhknit.cn.texnet.com.cn" target="_blank" class="green L130 english">http://jhknit.cn.texnet.com.cn</a>"
    [71] => string(130) "<a target="_blank" href="/enquiry/?t=company&id=8694"><img src="/images/enquire.gif" style="cursor:pointor" align="absbottom"></a>"
    [72] => string(198) "<a href="http://kangtaisilk.cn.texnet.com.cn" title="桐乡市康泰织造有限公司" target="_blank" class="L14 bigblue2">     <font color=&#39;#FF0000&#39;>桐乡市</font>康泰织造有限公司  </a>"
    [73] => string(122) "<a href="http://kangtaisilk.cn.texnet.com.cn/pdetail--716322.html" title="丝绵绸" target="_blank" >     丝绵绸  </a>"
    [74] => string(134) "<a href="http://kangtaisilk.cn.texnet.com.cn/pdetail--716326.html" title="色织双宫绸" target="_blank" >     色织双宫绸  </a>"
    [75] => string(116) "<a href="http://kangtaisilk.cn.texnet.com.cn/pdetail--716324.html" title="真丝" target="_blank" >     真丝  </a>"
    [76] => string(134) "<a href="http://kangtaisilk.cn.texnet.com.cn/pdetail--716321.html" title="涤丝双宫绸" target="_blank" >     涤丝双宫绸  </a>"
    [77] => string(134) "<a href="http://kangtaisilk.cn.texnet.com.cn/pdetail--716703.html" title="缎染双宫绸" target="_blank" >     缎染双宫绸  </a>"
    [78] => string(128) "<a href="http://kangtaisilk.cn.texnet.com.cn" target="_blank" class="green L130 english">http://kangtaisilk.cn.texnet.com.cn</a>"
    [79] => string(131) "<a target="_blank" href="/enquiry/?t=company&id=15390"><img src="/images/enquire.gif" style="cursor:pointor" align="absbottom"></a>"
    [80] => string(205) "<a href="http://bysilk.cn.texnet.com.cn" title="桐乡市博阳丝绸织造有限公司" target="_blank" class="L14 bigblue2">     <font color=&#39;#FF0000&#39;>桐乡市</font>博阳丝绸织造有限公司  </a>"
    [81] => string(111) "<a href="http://bysilk.cn.texnet.com.cn/pdetail--844020.html" title="丝麻" target="_blank" >     丝麻  </a>"
    [82] => string(111) "<a href="http://bysilk.cn.texnet.com.cn/pdetail--843991.html" title="围巾" target="_blank" >     围巾  </a>"
    [83] => string(123) "<a href="http://bysilk.cn.texnet.com.cn/pdetail--843992.html" title="羊绒围巾" target="_blank" >     羊绒围巾  </a>"
    [84] => string(129) "<a href="http://bysilk.cn.texnet.com.cn/pdetail--843993.html" title="丝羊绒围巾" target="_blank" >     丝羊绒围巾  </a>"
    [85] => string(123) "<a href="http://bysilk.cn.texnet.com.cn/pdetail--843994.html" title="真丝围巾" target="_blank" >     真丝围巾  </a>"
    [86] => string(118) "<a href="http://bysilk.cn.texnet.com.cn" target="_blank" class="green L130 english">http://bysilk.cn.texnet.com.cn</a>"
    [87] => string(132) "<a target="_blank" href="/enquiry/?t=company&id=194739"><img src="/images/enquire.gif" style="cursor:pointor" align="absbottom"></a>"
    [88] => string(203) "<a href="http://huafangtex.cn.texnet.com.cn" title="桐乡市华方纺织品有限公司" target="_blank" class="L14 bigblue2">     <font color=&#39;#FF0000&#39;>桐乡市</font>华方纺织品有限公司  </a>"
    [89] => string(122) "<a href="http://huafangtex.cn.texnet.com.cn/pdetail--1349605.html" title="毛圈布" target="_blank" >     毛圈布  </a>"
    [90] => string(122) "<a href="http://huafangtex.cn.texnet.com.cn/pdetail--1349676.html" title="双面布" target="_blank" >     双面布  </a>"
    [91] => string(116) "<a href="http://huafangtex.cn.texnet.com.cn/pdetail--1349970.html" title="汗布" target="_blank" >     汗布  </a>"
    [92] => string(128) "<a href="http://huafangtex.cn.texnet.com.cn/pdetail--1350037.html" title="人棉汗布" target="_blank" >     人棉汗布  </a>"
    [93] => string(140) "<a href="http://huafangtex.cn.texnet.com.cn/pdetail--1349631.html" title="全棉竹节毛圈" target="_blank" >     全棉竹节毛圈  </a>"
    [94] => string(126) "<a href="http://huafangtex.cn.texnet.com.cn" target="_blank" class="green L130 english">http://huafangtex.cn.texnet.com.cn</a>"
    [95] => string(132) "<a target="_blank" href="/enquiry/?t=company&id=236133"><img src="/images/enquire.gif" style="cursor:pointor" align="absbottom"></a>"
  }
}

Isn’t it very simple, very violent, very direct.

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