Regex & PHP - isolate src attribute from img tag

Question

With PHP, how can I isolate the contents of the src attribute from $foo? The end result I'm looking for would give me just "http://example.com/img/image.jpg"

$foo = '<img class="foo bar test" title="test image" src="http://example.com/img/image.jpg" alt="test image" width="100" height="100" />';

Answer 1

try this pattern:

'/< \s* img [^\>]* src \s* = \s* [\""\']? ( [^\""\'\s>]* )/'

Answer 2

Code

<?php
    $foo = '<img class="foo bar test" title="test image" src="http://example.com/img/image.jpg" alt="test image" width="100" height="100" />';
    $array = array();
    preg_match( '/src="([^"]*)"/i', $foo, $array ) ;
    print_r( $array[1] ) ;

Output

http://example.com/img/image.jpg

Answer 3

// Create DOM from string
$html = str_get_html('<img class="foo bar test" title="test image" src="http://example.com/img/image.jpg" alt="test image" width="100" height="100" />');

// echo the src attribute
echo $html->find('img', 0)->src;

http://simplehtmldom.sourceforge.net/

Answer 4

If you don't wish to use regex (or any non-standard PHP components), a reasonable solution using the built-in DOMDocument class would be as follows:

<?php
    $doc = new DOMDocument();
    $doc->loadHTML('<img src="http://example.com/img/image.jpg" ... />');
    $imageTags = $doc->getElementsByTagName('img');

    foreach($imageTags as $tag) {
        echo $tag->getAttribute('src');
    }
?>

Answer 5

Here's what I ended up doing, although I'm not sure about how efficient this is:

$imgsplit = explode('"',$data);
foreach ($imgsplit as $item) {
    if (strpos($item, 'http') !== FALSE) {
        $image = $item;
        break;
    }
}

Answer 6

You can go around this problem using this function:

function getTextBetween($start, $end, $text)
{
 $start_from = strpos($text, $start);
 $start_pos = $start_from + strlen($start);
 $end_pos = strpos($text, $end, $start_pos + 1);
 $subtext = substr($text, $start_pos, $end_pos);
 return $subtext;
}

$foo = '<img class="foo bar test" title="test image" 
src="http://example.com/img/image.jpg" alt="test image"
width="100" height="100" />';

$img_src = getTextBetween('src="', '"', $foo);

Answer 7

I got this code:

$dom = new DOMDocument();
$dom->loadHTML($img);
echo $dom->getElementsByTagName('img')->item(0)->getAttribute('src');

Assuming there is only one img :P

Answer 8

preg_match solves this problem nicely.

See my answer here: http://stackoverflow.com/questions/138313/how-to-extract-img-src-title-and-alt-from-html-using-php/3815188#3815188