Hello Drupal community,

I'm finding some issues in a tamper used in feed's module. I want spaces to be deleted in a field that contains numbers. Something that changes "00 00 00 00 00" into "0000000000". I've tried the following :

    Regex to find : #(\d{2})[ ](\d{2})[ ](\d{2})[ ](\d{2})[ ](\d{2})#
    Replacement pattern : $1$2$3$4$5

enter image description here

Note that the expression was validated in https://regex101.com/ : enter image description here

But it doesn't seem to work. Anyone please ?

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    try str_replace(" ", "", $string); or preg_replace("/ +/", "", $string); – Bipin K Aug 13 '15 at 10:25
  • @BipinK Actually, i'm not custom coding it. It's part of feed's tamper module. I just added the imagine to illustrate the problem. Thanks for your help ! – Ismail H Aug 13 '15 at 11:59
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    @IsmaH No matter if you are custom coding it or not - it is good idea to test if your regexp is valid in the first place. At the moment I see nothing like that in your question. See here if you don't have easy access to php-enabled shell. – Mołot Aug 13 '15 at 12:01
  • @Mołot I've already tested the pattern in regex101.com and it's working. I will change my post accordingly. Thank you. – Ismail H Aug 13 '15 at 12:30

What you need to do is something like this


and then replace with $1

then if you need to limit it, use the limit field.

Its better to try and match the pattern thank the whole string- that one matches 2 numbers, followed by at least one space, and replaces it with the captured number (in brackets) - so it'll match the whole thing.

you could add a positive look ahead (?\d) to make sure it matches 2 numbers then space followed by a number, but testing the above worked

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Try giving Limit number of replacements value as -1 This will solve your issue.

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  • Not working :( :( Sorry – Ismail H Aug 13 '15 at 12:34

Not a solution to this exact issue, but a troubleshooting guide:

What was helpful to me was to dpm the module's parameters and variables. In this file: \sites\all\modules\feeds_tamper\plugins\find_replace_regex.inc - modify this code to insert dmp() functions. (you'll need the devel module for this)

function feeds_tamper_find_replace_regex_callback($result, $item_key, $element_key, &$field, $settings, $source) {
  $field = preg_replace($settings['find'], $settings['replace'], $field, $settings['real_limit']);

Then go to your importer page /import and run the import you've created.

Regex101 doesn't emulate php exactly from my personal experience. My tests would return "" in conflict with Regex101. For a quick php-test use: http://phptester.net/

like this:

$string = 'echoMyString';
$regex = '/(echo)(MyString)/';
$replace = '$2';

echo preg_replace($regex, $replace, $string, '-1');

[Output:] MyString

This procedure helped me troubleshoot why my regex wasn't working for Feeds Tamper Importer

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