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PHP采集代码实例

Jun 13, 2016 am 11:34 AM
end function php start str substr code function Example intercept regular collection

function preg_substr($start, $end, $str) // 正则截取函数     
{     
    $temp = preg_split($start, $str);     
    $content = preg_split($end, $temp[1]);     
    return $content[0];     
}  
function str_substr($start, $end, $str) // 字符串截取函数     
{     
    $temp = explode($start, $str, 2);     
    $content = explode($end, $temp[1], 2);     
    return $content[0];     
}  
// ---------------- 使用实例 ----------------  
$str = iconv("UTF-8", "GB2312", file_get_contents("http://www.bkjia.com"));   
echo ('标题: ' . str_substr("", "", $str)); // 通过字符串提取标题  
echo ('作者: ' . preg_substr("/userid=d+">/", "//", $str)); // 通过正则提取作者  
echo ('内容: ' . str_substr('

', '
', $str)); //内容当然不可以少  
?>
   

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