Find all hrefs in page and replace with link maintaining previous link - PHP

Use PHP's DomDocument to parse the page

$doc = new DOMDocument();

// load the string into the DOM (this is your page's HTML), see below for more info
$doc->loadHTML('<a href="http://www.google.com">Google</a>');

//Loop through each <a> tag in the dom and change the href property
foreach($doc->getElementsByTagName('a') as $anchor) {
    $link = $anchor->getAttribute('href');
    $link = 'http://www.example.com/?loadpage='.urlencode($link);
    $anchor->setAttribute('href', $link);
}
echo $doc->saveHTML();

Check it out here: http://codepad.org/9enqx3Rv

If you don't have the HTML as a string, you may use cUrl (docs) to grab the HTML, or you can use the loadHTMLFile method of DomDocument

Documentation

• DomDocument - http://php.net/manual/en/class.domdocument.php
• DomElement - http://www.php.net/manual/en/class.domelement.php
• DomElement::getAttribute - http://www.php.net/manual/en/domelement.getattribute.php
• DOMElement::setAttribute - http://www.php.net/manual/en/domelement.setattribute.php
• urlencode - http://php.net/manual/en/function.urlencode.php
• DomDocument::loadHTMLFile - http://www.php.net/manual/en/domdocument.loadhtmlfile.php
• cURL - http://php.net/manual/en/book.curl.php

To convert the plain text line breaks to html line breaks, try this:

    $fh = fopen("filename.txt", 'r');

    $pageText = fread($fh, 25000);

    echo nl2br($pageText);

Note the nl2br function wrapping the text.

You should be able to accomplish this easily with a basic fread(). You can specify how many bytes you want to read, so it's trivial to read in an exact amount and output it to a new file.

Try something like this:

$i = 1;
$fp = fopen("test.txt",'r');
while(! feof($fp)) {
    $contents = fread($fp,1000);
    file_put_contents('new_file_'.$i.'.txt',$contents);
    $i++;
}

EDIT

If you wish to stop after a certain amount of length OR on a certain character, then you could use stream_get_line() instead of fread(). It's almost identical, except it allows you to specify any ending delimiter you wish. Note that it does not return the delimeter as part of the read.

$contents = stream_get_line($fp,1000,".");