Replace numbers in string with phrase-number

Question

In PHP I have a string with a value of something like 1 OR 2 or maybe 1 AND (20 OR 3). I would like to replace those numbers with a phrase followed by the number to make something like condition1 meaning:

1 OR 2 => condition1 OR condition2

1 AND (20 OR 3) => condition1 AND (condition20 OR condition3)

I think I can use preg_replace to do this but I can't figure out how. I'm having a difficult time preserving the value of the numbers during the replacement.

If it makes it easier I will also accept an answer in javascript

preg_replace is acceptable, but I can't figure out how to use it correctly to do what I need — Matt Urtnowski
– Matt Urtnowski, Commented Feb 7, 2013 at 20:20

nickb · Accepted Answer · 2013-02-07 20:20:09Z

3

If the arguments to the operators are the only numbers in the string, you can do:

$new = preg_replace( '/(\d+)/', 'condition$1', $input);

This matches any successive number of digits, and captures them in a capturing group, which we reference later in the replacement as $1.

You can see from this demo that for your test cases, this outputs:

condition1 OR condition2
condition1 AND (condition20 OR condition3)

answered Feb 7, 2013 at 20:20

nickb

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Comments

M K Garwa · Accepted Answer · 2013-02-07 20:22:10Z

1

you can use str_replace($search, $replace, $string)

$search can be array whatever you want to replace
$replace can alse be an array wherever you want to replace in a string
$string is a string where you want to change

is it solution of your problem or you want something else?

answered Feb 7, 2013 at 20:22

M K Garwa

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