php regular expression for start with number or alphabet mid contain Asked Dec 17 '15 at 21:24 Active Dec 17 '15 at 21:56 Viewed 86 times

Question

I try myself to extract this type of links using explode but it not work maybe regular expression will helpful

links are :

01 &#8211; Root Books <a href="http://mylinkforgoogle.com.pdf" 

shokly  <a href="http://mylinkforgoogle.com.pdf"

i have dozen links in text file that i want extract i have no good knowldge but i want to try

php regular expression for start with number or alphabet mid contain <a href=" at end with .pdf 

Answer 1

 <?php

    $text = 'shokly  <a href="http://mylinkforgoogle.com.pdf'; 
    $link = strstr($text, 'http://');
    echo$link;

    ?>

Output:

http://mylinkforgoogle.com.pdf

I think this will be enough but if you are looking for pattern; it must be like this:

   <?php

$text = 'shokly  <a href="http://mylinkforgoogle.com.pdf"'; 
$pattern="/http:\/\/.[^w]*?\.pdf/i";
preg_match($pattern, $text, $matches);
print_r($matches);

?>

Output:

Array ( [0] => http://mylinkforgoogle.com.pdf )

Answer 2

You can use a regex like this:

href="(.*?)"

Working demo

Code

$re = "/href=\"(.*?)\"/"; 
$str = "01 &#8211; Root Books <a href=\"http://mylinkforgoogle.com.pdf\" \n\nshokly  <a href=\"http://mylinkforgoogle.com.pdf\"\n"; 

preg_match_all($re, $str, $matches);

Answer 3

Surely you're not parsing html with regex?

Here's a couple regexes that will do the job:

// @todo: This should be possible in 1 line
preg_match('/(?<=href=").*?(?=")/', $input_line, $output_array);
preg_match("/(?<=href=').*?(?=')/", $input_line, $output_array);

You can test them out here.