php抓取网页指定内容(php抓取网页指定内容，可以爬取的数据范围比较广)

　　php抓取网页指定内容(php抓取网页指定内容，可以爬取的数据范围比较广)

　　php抓取网页指定内容，可以爬取的数据范围比较广，我这里就以phpspider为例进行讲解。首先，你需要理解一下phpspider是什么。phpspider抓取网页内容首先，我们要知道phpspider是什么。phpspider抓取网页内容是通过程序抓取所有的网页内容，并且可以保存到一个数据库中，然后通过数据库进行分析。

　　phpspider抓取所有网页内容可以采用下面的步骤实现。具体代码可以参考这篇文章。phpspider抓取网页内容代码截图如下，部分不是特别清晰，可以看下方的截图整体代码如下：//定义一个phpspider//url，去寻找合适的网页，这里选择了百度和//定义一个item对象$item=get_url('');$url=$item->get('/');//参数id,参数id,参数set_text('','关于我们');$text='';//参数name,参数name,参数set_text('','','我们可以通过一个或多个id去抓取该网页//text="',text,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,96,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,128,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,168,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,180,181,182,183,184,185,186,187,188,189,180,183,184,186,187,188,189,181,184,187,188,189,184,188,188,189,186,189,187,188,189,188,189,180,184,185,186,187,188,189,188,189,186,189,188,189,187,189,186,189,188,189。