I was in the market for a simple php script to replace hrefs with their absolute paths from scraped web pages. I wrote one myself. I used the preg_replace_callback function so that I could pass the parsed results as a single variable.
<?php
$domain = "http://seanbehan.com";
$pattern = "/\bhref=[\"|'](.*?)[\"|']/";
$string = file_get_contents($domain);
// prepends relative links w/ $domain skips returns the match if already absolute
function replace_href($match){
global $domain;
if(substr($match[1], 0, 7)!=="http://" && substr($match[1],0,8)!=="https://"){
return "href='".$domain.$match[1]."'";
} else {
return "href='".$match[1]."'s";
}
}
print preg_replace_callback($pattern, "replace_href", $string);
Related posts:
a little shorter still…
<?php
$url = parse_url($_GET['url']);
function absolutize($string){
global $url;
$absolute = substr($string[1],0,7) == “http://” ? true : false;
if($absolute){ return $string[0]; }
return “href=’”.$url['scheme'].”://”.$url['host'].”".$string[1].”‘”;
}
$contents = file_get_contents($_GET['url']);
$contents = preg_replace_callback(“/\bhref=[\"|'](.*?)[\"|']/”, “absolutize”, $contents);
print $contents;