Replace repeating substring pattern from string with regex

Question

I have the following string:

"Canal Capital(Canal Capital) Felipe Cano - Recursos Humanos - [email protected] - (Canal Capital) Andres Zapata - Tecnologías de la Información - [email protected] - 3212032851(Canal Capital) Miguel Cabo - Canal Capital - [email protected] - 457 83 00 Ext. 5227 301 734 07 56"

I want to be able to remove a repeating pattern inside the string, so if the pattern is (Canal Capital), I should end up with:

"Canal Capital Felipe Cano - Recursos Humanos - [email protected] - Andres Zapata - Tecnologías de la Información - [email protected] - 3212032851 Miguel Cabo - Canal Capital - [email protected] - 457 83 00 Ext. 5227 301 734 07 56"

So far I've tried this (It works if the pattern repeats itself only once):

$cadena = preg_replace("/\(.*\)/", "", $cadena);

But I get just the first "Canal Capital" part. Can I achieve my goal with regex ? Maybe there's a better way to accomplish this that I don't know about. Thanks.

Narendrasingh Sisodia · Accepted Answer · 2015-08-19 06:27:36Z

1

You can use the following pattern as

/(?<=[\w-\s\S])(\(.*?\))(?=[\w\s\S])/

(?<=[\w-\s\S]) Positive Lookbehind - [\w-\s\S] match a single character present in the list below
\( matches the character ( literally
.*? matches any character (except newline)
\) matches the character ) literally
(?=[\w\s\S]) Positive Lookahead - [\w\s\S] match a single character present in the list below

So the code looks like as

$res = preg_replace('/(?<=[\w-\s\S])(\(.*?\))(?=[\w\s\S])/', '', 'Canal Capital(Canal Capital) Felipe Cano - Recursos Humanos - [email protected] - (Canal Capital) Andres Zapata - Tecnologías de la Información - [email protected] - 3212032851(Canal Capital) Miguel Cabo - Canal Capital - [email protected] - 457 83 00 Ext. 5227 301 734 07 56');
echo $res;

Or you can simply use this as

/(\(.*?\))/

Demo

Regex

edited Aug 19, 2015 at 6:27

answered Aug 19, 2015 at 6:13

Narendrasingh Sisodia

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NeverHopeless · Accepted Answer · 2015-08-19 06:21:58Z

0

You are almost close, you are just missing the ? quantifier which makes the greedy matcher, non-greedy (lazy).

Try like this:

(\(.*?\))

which results:

Canal Capital Felipe Cano - Recursos Humanos - [email protected] - Andres Zapata - Tecnologías de la Información - [email protected] - 3212032851 Miguel Cabo - Canal Capital - [email protected] - 457 83 00 Ext. 5227 301 734 07 56

Demo

answered Aug 19, 2015 at 6:21

NeverHopeless

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