images from directory

[raouleduke]

I am using this to display image from directory, my problem is that when the $ListingID = 05-250, I get 05-2501, 05-2502 etcc......., I want it to be an exact match, how do I do that.

$dir = 'images'; 
$dp = dir($dir); 
while (($file = $dp->read()) !== false) { 
    if (strpos($file, $ListingID) === 0) { 
        echo "<a href=\"javascript:changeImage('images/$file')\"><img src=\"images/$file\" width='78' height='50' border='0'></a>&nbsp;"; 

} 

Thanks in advance for any help.

[devinemke]

change this:

if (strpos($file, $ListingID) === 0) {...

to this:

if ($file == $ListingID) {...

[raouleduke]

That didn't work there are multiple images that I need to get 05-250_01.jpg, 05-250_02.jpg etc..... Can I use something to strip the last 6 characters, then use the $file == $ListingID.

[planetsim]

So basically what you want are all files starting with 05-250 and ending with jpg? or any format?

if (substr($file, 0, 6) == $listingID) //assuming listingID is 05-250

If you want a particular format you may want to use a regular expression, as this could get you a directory, html file etc.

[raouleduke]

some are like this 05-250_1, 05-250_12, is there a way to strip everything back to the underscore.

[planetsim]

Take a look at [man]substr[/man] Ive showed an example.

[raouleduke]

I don't think that substr will work. All I want is everything before the underscore '_'. Like for 05-250_12.jpg , or 05-250_1.jpg , would return 05-250. substr uses fixes numbers like 5 from the right, there will not be any exact lengths. If there was one that was 05-34343433_1.jpg, I want 05-34343433.

Hope this helps, and thanks for helping me.

[planetsim]

[man]strpos[/man] is what your after, then from there you can use substr to get the numbers before the underscore, also your question seems to keep changing firstly you want an exact match, now you want characters before the underscore, perhaps explaining the first time exactly what you wanted.

[raouleduke]

$dp = dir($dir); 
while (($file = $dp->read()) !== false) { 
$pos = strpos($file, '_', 0); 

$filenew = substr($file, 0, $pos);

Thanks for your help