Bulk Rename Files in a Folder - PHP

Question 1

I have 1000 images in a Folder, which has SKU# word in all the images. For examples

WV1716BNSKU#.zoom.1.jpg
WV1716BLSKU#.zoom.3.jpg

what i need to do is read all the filenames and rename it to the following

WV1716BN.zoom.1.jpg
WV1716BL.zoom.3.jpg

So remove SKU# from filename, is it possible in PHP to do bulk renaming ?

Question 2

Yeah, just open the directory and create a loop to access all images and rename them, like:

<?php

if ($handle = opendir('/path/to/files')) {
    while (false !== ($fileName = readdir($handle))) {
        $newName = str_replace("SKU#","",$fileName);
        rename($fileName, $newName);
    }
    closedir($handle);
}
?>

References:

http://php.net/manual/en/function.rename.php

http://php.net/manual/en/function.readdir.php

http://php.net/manual/en/function.str-replace.php

Question 3

Here's what worked best for me when trying to script this (in case anyone else comes across this like I did):

$ pecl -d php_suffix=5.6 install <package>
$ pecl uninstall -r <package>

$ pecl -d php_suffix=7.0 install <package>
$ pecl uninstall -r <package>

$ pecl -d php_suffix=7.1 install <package>
$ pecl uninstall -r <package>

The -d php_suffix=<version> piece allows you to set config values at run time vs pre-setting them with pecl config-set. The uninstall -r bit does not actually uninstall it (from the docs):

[email protected]:~$ pecl help uninstall
pecl uninstall [options] [channel/]<package> ...
Uninstalls one or more PEAR packages.  More than one package may be
specified at once.  Prefix with channel name to uninstall from a
channel not in your default channel (pecl.php.net)

Options:
  ...
  -r, --register-only
        do not remove files, only register the packages as not installed
  ...

The uninstall line is necessary otherwise installing it will remove any previously installed version, even if it was for a different PHP version (ex: Installing an extension for PHP 7.0 would remove the 5.6 version if the package was still registered as installed).

Question 4

Try to use a loop, let, and printf for the padding:

a=1
for i in *.jpg; do
  new=$(printf "%04d.jpg" "$a") #04 pad to length of 4
  mv -i -- "$i" "$new"
  let a=a+1
done

using the -i flag prevents automatically overwriting existing files.

Question 5

It looks like you are using the rename you get on Ubuntu (it's not the one that's on my ArchLinux box), but there are other ones out there. But, you've presented it oddly. The brackets around -n shouldn't be there and the ; ends the command.

The syntax, if you are using what I think you are, is this:

% rename -n -e PERL_EXPR file1 file2 ...

The Perl expression is the argument to the -e switch, and can be a simple substitution. Note that this expression is a string that you give to -e, so that probably needs to be quoted:

% rename -n -e 's/-d+-pdr2_wide//' *.fits
rename(2185-cutout-HSC-I-9330-pdr2_wide.fits, 2185-cutout-HSC-I.fits)

And, instead of doing this in one step, I'd do it in two:

% rename -n -e 's/-cutout-/-/; s/-d+-pdr2_wide//' *.fits
rename(2185-cutout-HSC-I-9330-pdr2_wide.fits, 2185-HSC-I.fits)

There are other patterns that might make sense. Instead of taking away parts, you can keep parts:

% rename -n -e 's/A(d+).*(HSC-I).*/$1-$2.fits/' *.fits
rename(2185-cutout-HSC-I-9330-pdr2_wide.fits, 2185-HSC-I.fits)

I'd be inclined to use named captures so the next poor slob knows what you are doing:

% rename -n -e 's/A(?<galaxy>d+).*(HSC-I).*/$+{galaxy}-$2.fits/' *.fits
rename(2185-cutout-HSC-I-9330-pdr2_wide.fits, 2185-HSC-I.fits)

Question 6

Never used any of those, but they look interesting..

Take a look at Gearman as well.. more overhead in systems like these but you get other cool stuff :) Guess it depends on your needs ..

Bulk Rename Files in a Folder - PHP

Answers

php