PHP - insert string into filename before extension

[jordanste]

i need to insert a string into the string $filename before the file extension. i was trying to use substr_replace to do it but i dont think i understand how to use substr_replace and i cant even get it to remove the file extension.

so i need to take "file1.jpg" and change it to "file1-1.jpg"

thanks.

 

[angelwatt]

Try this out. Haven't tested though. (edit: now tested)

$filename = preg_replace('/(.*)(\.[\w\d]{3})/', '$1-1$2', $filename);

In the above, the $1 captures the existing name of the file. $2 captures the period plus the extension of the file.

 

[macfaninpdx]

Also, if you know there won't be any other periods in the filename, you could explode it, modify the name, and then join it back together.

$name_parts= explode(".", $filename);
$newname = $name_parts[0] . "-1" . "." . $name_parts[1];

 

[angelwatt]

And since there's a number of ways to skin a cat (and because I'm bored), I'll throw an additional way out.

$filename = substr($filename, 0, -4) .'-1'. substr($filename, -4);

This assumes you're using files with a 3-letter extension. It also likely runs faster that my first solution as regexp functions take a tad longer to process (the extra time wouldn't be noticeable unless you're using a couple hundred times). This also won't have any issues if there's other . in the file besides for the extension.

 

[macfaninpdx]

And since there's a number of ways to skin a cat (and because I'm bored), I'll throw an additional way out.

$pos = -1 * strrpos($filename, ".");
$filename = substr($filename, 0, $pos) . '-1' . substr($filename, $pos);

I updated the above to allow for filename extensions longer than 3 characters. This method only requires that a period be used to separate the extension, but periods can also be used in the filename.

 

[Arjunngu3]

$pos = -1 * strrpos($filename, ".");
$filename = substr($filename, 0, $pos) . '-1' . substr($filename, $pos);

I updated the above to allow for filename extensions longer than 3 characters. This method only requires that a period be used to separate the extension, but periods can also be used in the filename.

 

[Darth.Titan]

Seriously... almost 9 year old thread!

 

[D.T.]

Seriously... almost 9 year old thread!

It's funny, I almost posted in the Site Feedback section today, to ask if there was a way to configure a rule [in this MB] to prevent a thread that's X days old (or Y days relative) from being bumped by a new user. I see these all the time - someone stumbled on a 8+ year old thread and posts some totally irrelevant followup/response.