'PHP find all links in the text

I want to find all links in the text like this:

Test text http://hello.world Test text 
http://google.com/file.jpg Test text https://hell.o.wor.ld/test?qwe=qwe Test text 
test text http://test.test/test

I know i need to use preg_match_all, but have only idea in the head: start search from http|https|ftp and end search where space or end of the text appears, thats all i need really, so all links wiil be found properly.

Anyone can help me with php regexp pattern?

I think i need to use assertions in the end of pattern, but can`t understand their properly usage for now.

Any ideas? Thanx!

php regex

Solution 1:^[1]

function turnUrlIntoHyperlink($string){
    //The Regular Expression filter
    $reg_exUrl = "/(?i)\b((?:https?:\/\/|www\d{0,3}[.]|[a-z0-9.\-]+[.][a-z]{2,4}\/)(?:[^\s()<>]+|\(([^\s()<>]+|(\([^\s()<>]+\)))*\))+(?:\(([^\s()<>]+|(\([^\s()<>]+\)))*\)|[^\s`!()\[\]{};:'\".,<>?«»“”‘’]))/";

    // Check if there is a url in the text
    if(preg_match_all($reg_exUrl, $string, $url)) {

        // Loop through all matches
        foreach($url[0] as $newLinks){
            if(strstr( $newLinks, ":" ) === false){
                $link = 'http://'.$newLinks;
            }else{
                $link = $newLinks;
            }

            // Create Search and Replace strings
            $search  = $newLinks;
            $replace = '<a href="'.$link.'" title="'.$newLinks.'" target="_blank">'.$link.'</a>';
            $string = str_replace($search, $replace, $string);
        }
    }

    //Return result
    return $string;
}

Solution 2:^[2]

<?php

// The Regular Expression filter
$reg_exUrl = "/(http|https|ftp|ftps)\:\/\/[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(\/\S*)?/";

// The Text you want to filter for urls
$text = "The text you want to filter goes here. http://google.com";

// Check if there is a url in the text
if(preg_match($reg_exUrl, $text, $url)) {

       // make the urls hyper links
       echo preg_replace($reg_exUrl, "<a href="{$url[0]}">{$url[0]}</a> ", $text);

} else {

       // if no urls in the text just return the text
       echo $text;

}
?>

Reference:http://css-tricks.com/snippets/php/find-urls-in-text-make-links/

Solution 3:^[3]

Works like a charm. use this.

$str= "Test text http://hello.world";
preg_match_all('/\b(?:(?:https?|ftp|file):\/\/|www\.|ftp\.)[-A-Z0-9+&@#\/%=~_|$?!:,.]*[A-Z0-9+&@#\/%=~_|$]/i', $str, $result, PREG_PATTERN_ORDER);
print_r($result[0]);

Solution 4:^[4]

The suggested answers are great, but one of them miss www. case, the other http://

So, let's combine all of those:

$text = Test text http://hello.world Test text 
http://google.com/file.jpg Test text https://hell.o.wor.ld/test?qwe=qwe Test text 
test text http://test.test/test

preg_match_all('/(((http|https|ftp|ftps)\:\/\/)|(www\.))[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(\:[0-9]+)?(\/\S*)?/', $text, $results, PREG_PATTERN_ORDER);

print_r($results[0]);

The return value for PREG_PATTERN_ORDER will be Array of Arrays (results) so that $results[0] is an array of full pattern matches, $results[1] is an array of strings matched by the first parenthesized subpattern, and so on.

Solution 5:^[5]

function turnUrlIntoHyperlink($string) { // The Regular Expression filter $reg_exUrl = "/(http|https|ftp|ftps)://[a-zA-Z0-9-.]+.[a-zA-Z]{2,3}(/\S*)?/";

// Check if there is a url in the text
if (preg_match($reg_exUrl, $string, $url)) {
    // make the urls hyper links
    echo preg_replace($reg_exUrl, "<a target='_blank' href='{$url[0]}'>{$url[0]}</a>", $string);
} else {
    // if no urls in the text just return the text
    echo $string;
}

}

Solution 6:^[6]

For converting URLs to tags, and recognizing URLs without http/https, try the below. It uses preg_replace_callback to avoid the issue in one of the other answers with the same URL appearing multiple times:

  private function convertUrls($string) {
    $url_pattern = '/(((http|https)\:\/\/)|(www\.))[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,}(\:[0-9]+)?(\/\S*)?/';
    return preg_replace_callback($url_pattern,
      function($matches) {
        $match = $matches[0];
        if (strstr($match, ":") === false) {
          $url = "https://$match";
        } else {
          $url = $match;
        }
        return '<a href="' . $url .'" target="_blank">' . $url . '</a>';
      },
      $string);
  }

Solution 7:^[7]

Alternative to regexp it´s use this library

Works very good, butnot for very complex codes.

foreach($html->find('a') as $element) 
       echo $element->href . '<br>';

And easy to use. No regular expressions skills required:-)

Solution 8:^[8]

Not regexp, but finds it all and makes sure that they are not already encompassed in a tag already. It also checks to make sure that the link isn't encapsulated in (), [], "" or anything else with an open and close.

$txt = "Test text http://hello.world Test text 
http://google.com/file.jpg Test text https://hell.o.wor.ld/test?qwe=qwe Test text 
test text http://test.test/test <a href=\"http://example.com\">I am already linked up</a>
It was also done in 1927 (http://test.com/reference) Also check this out:http://test/index&t=27";
$holder = explode("http",$txt);
for($i = 1; $i < (count($holder));$i++) {
    if (substr($holder[$i-1],-6) != 'href="') { // this means that the link is not alread in an a tag.
        if (strpos($holder[$i]," ")!==false) //if the link is not the last item in the text block, stop at the first space
            $href = substr($holder[$i],0,strpos($holder[$i]," "));
        else                                //else it is the last item, take it
            $href = $holder[$i];
        if (ctype_punct(substr($holder[$i-1],strlen($holder[$i-1])-1)) && ctype_punct(substr($holder[$i],strlen($holder[$i])-1)))
            $href = substr($href,0,-1);     //if both the fron and back of the link are encapsulated in punctuation, truncate the link by one
        $holder[$i] = implode("$href\" target=\"_blank\" class=\"link\">http$href</a>",explode($href,$holder[$i]));
        $holder[$i-1] .= "<a href=\"";
    }
}
$txt = implode("http",$holder);

echo $txt;

Output:

Test text <a href="http://hello.world" target="_blank" class="link">http://hello.world</a> Test text 
<a href="http://google.com/file.jpg" target="_blank" class="link">http://google.com/file.jpg</a> Test text <a href="https://hell.o.wor.ld/test?qwe=qwe" target="_blank" class="link">https://hell.o.wor.ld/test?qwe=qwe</a> Test text 
test text <a href="http://test.test/test" target="_blank" class="link">http://test.test/test</a> <a href="http://example.com">I am already linked up</a>
It was also done in 1927 (<a href="http://test.com/reference" target="_blank" class="link">http://test.com/reference</a>) Also check this out:<a href="http://test/index&amp;t=27" target="_blank" class="link">http://test/index&amp;t=27</a>

Solution 9:^[9]

i use this function

  <?php
    function deteli($string){
        $pos  = strpos($string, 'http');
        $spos = strpos($string, ' ', $pos);
        $lst  = $spos - $pos;
        $bef  = substr($string, 0, $pos);
        $aft  = substr($string, $spos);
        if ($pos == true || $pos == 0) {
            $link = substr($string, $pos, $lst);
            $res  =  $bef . "<a href='" . $link . "' class='link' target='_blank'>link</a>" . $aft . ""; 
            return  $res;
        }
        else{
            return $string;
        }
    }?>

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution	Source
Solution 1	Youssef NAIT
Solution 2	hellosheikh
Solution 3	Vinoth Sd
Solution 4	Johnny
Solution 5	Eben Watts
Solution 6	smoyth
Solution 7	David
Solution 8	NotARealName
Solution 9

'PHP find all links in the text

Solution 1:[1]

Solution 2:[2]

Solution 3:[3]

Solution 4:[4]

Solution 5:[5]

Solution 6:[6]

Solution 7:[7]

Solution 8:[8]

Solution 9:[9]