Separate filename.jpg from a string

Question

I've got a field in my MySQL table with several params. I want to just get the filename.jpg or filename.gif as a new variable.

Here's the info in the table (Joomla banner module)

$string = '{"imageurl":"images\/banners\/foo.gif","width":"","height":"","alt":""}';

$theimage = find(gif or jpg, $string); // Or something.. :-)

Answer 1

You can use the json_decode() method to decode the string and convert it into an object. And then use the pathInfo() method to get the extension as shown below.

<?php

$string = '{"imageurl":"images\/banners\/foo.gif","width":"","height":"","alt":""}';
$obj = json_decode($string);
$names = pathInfo($obj->imageurl);
echo $names['extension']; //gif
echo $names['basename']; //foo.gif
echo $names['filename']; //foo

?>

Answer 2

If you want to use regex:

$input_lines = '{"imageurl":"images\/banners\/foo.gif","width":"","height":"","alt":""}';
preg_match_all("/[A-Za-z0-9]+\.(gif|jpg)/", $input_lines, $output_array);
print_r($output_array);

Result:

Array
(
[0] => Array
    (
        [0] => foo.gif
    )

[1] => Array
    (
        [0] => gif
    )

)