把坚持当成一种习惯，别人光鲜的背后，都有加倍的付出，没有谁比谁更容易，只有谁比谁更努力！放下不难，但坚持必须很酷。
本文实例讲述了php解析字符串里所有URL地址的方法。分享给大家供大家参考。具体如下：
<?php
// $html = the html on the page
// $current_url = the full url that the html came from
//(only needed for $repath)
// $repath = converts ../ and / and // urls to full valid urls
function pageLinks($html, $current_url = "", $repath = false){
preg_match_all("/\&;a.+?rel="nofollow noopener noreferrer" href=(\"|')(?!javascript：|#)(.+?)(\"|')/i", $html, $matches);
$links = array();
if(isset($matches[2])){
$links = $matches[2];
}
if($repath && count($links) > 0 && strlen($current_url) > 0){
$pathi = pathinfo($current_url);
$dir = $pathi["dirname"];
$base = parse_url($current_url);
$split_path = explode("/", $dir);
$url = "";
foreach($links as $k => $link){
if(preg_match("/^\.\./", $link)){
$total = substr_count($link, "../");
for($i = 0; $i < $total; $i++){
array_pop($split_path);
}
$url = implode("/", $split_path) . "/" . str_replace("../", "", $link);
}elseif(preg_match("/^\/\//", $link)){
$url = $base["scheme"] . ":" . $link;
}elseif(preg_match("/^\/|^.\//", $link)){
$url = $base["scheme"] . "://" . $base["host"] . $link;
}elseif(preg_match("/^[a-zA-Z0-9]/", $link)){
if(preg_match("/^http/", $link)){
$url = $link;
}else{
$url = $dir . "/" . $link;
}
}
$links[$k] = $url;
}
}
return $links;
}
header("content-type: text/plain");
$url = "//www.haodaima.com";
$html = file_get_contents($url);
// Gets links from the page:
print_r(pageLinks($html));
// Gets links from the page and formats them to a full valid url:
print_r(pageLinks($html, $url, true));
希望本文所述对大家的php程序设计有所帮助。
到此这篇关于php解析字符串里所有URL地址的方法就介绍到这了。生活赋予我们一种巨大的和无限高贵的礼品，这就是青春；充满着力量，充满着期待志愿，充满着求知和斗争的志向，充满着希望和信心。更多相关php解析字符串里所有URL地址的方法内容请查看相关栏目，小编编辑不易，再次感谢大家的支持！
