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Question

How do i go about removing 51365 from a string?

Answer 1

+3 A:

You could do it with a regex.

$new_string = preg_replace("/\d{5},?/",'',$string);

Cfreak 2010-08-12 16:19:48

Beautiful!!! Works like a charm. Thanks Cfreak!!!!

Tek9 2010-08-12 16:24:29

Note that this would also match 6 digits though.

Blair McMillan 2010-08-12 16:25:35

@Blair - um ... not it won't {5} is 5 digits and no more. the ,? is to remove trailing commas if they exist.

Cfreak 2010-08-12 16:33:25

@Cfreak - Correct, however 123456 would still match, as you don't specify that there cannot be a digit before or after it. Your code would match both (12345)6 as the , is optional and also match 1(23456) as leading digits are allowed. I could have also said that it would match 38 digits.

Blair McMillan 2010-08-13 07:49:29

`$new_string = preg_replace("/(^|\s)\d{5}(,?|$)/",'',$string);` would probably be more appropriate. Match the start of the string, or a space, 5 digits and then a comma or the end of the string.

Blair McMillan 2010-08-13 07:51:34

Answer 2

+1 A:

preg_replace (php doc).

You can find the 5-number strings using the pattern: /\d{5}/g and remove each occurrence.

Use it like this:

$string = preg_replace("/\d{5}/g", "", $string); (the g is for global (all occurrences))

If you want to get them (not remove them) then you should use:

preg_match (php doc)

Use it like this:

$matches = array();
preg_replace("/\d{5}/g", $matches);
foreach($matches as $match) {
    // do something with each $match
}

Bob Fincheimer 2010-08-12 16:21:42

In PHP (stupidly IMHO) you don't need the g flag because preg_replace replaces all by default.

Cfreak 2010-08-12 16:35:20

thanks @Cfreak.

Bob Fincheimer 2010-08-12 16:49:09

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How do i go about removing 51365 from a string?

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