regular expression

[Shadiya]

Please could somebody tell me the regular expression in thefollowing case.

I want to replace variable within {} with some other variable in the string.

for e.g:-
$string = "{she} is my friend";
$replace_variab le = "sita";
how to replace "{she}" with "sita" using regular expression?

[ronverdonk]

Why would you use a regular expression when the following will do and faster?
[php]str_replace('{s he}', $replace_variab le, $string);[/php]
Ronald :cool:

[Shadiya]

Can you please tell me how to use regular expression in this case as i am asked
to do using it?

[ronverdonk]

Not very much different[php]preg_replace('/{she}/', $replace_variab le, $string);[/php]
Ronald :cool:

[Shadiya]

thanx a lot for the quick reply :)

[Shadiya]

Can you also tell how to replace every thing in the string that starts and ends with curly braces with an array?

for e.g:
$string = " {this} chocolate belongs to {that} boy";
$replace_variab le = array('that', 'this');

It will be of great help if you could reply soon.

[ronverdonk]

YOU HAVE DOUBLE POSTED THIS QUESTION IN THE SAME THREAD!!! DO NOT DO THAT!! READ THE POSTING GUIDELINES BEFORE YOU CONTINUE.
Well I certainly do not know using a regular expression. That would be a large expression! Maybe someone else can help you here.

All I know is how to replace, using ARRAYS, strings in the str_replace as in the following example:
[php]// Provides: You should eat pizza, beer, and ice cream every day
$phrase = "You should eat fruits, vegetables, and fiber every day.";
$healthy = array("fruits", "vegetables ", "fiber");
$yummy = array("pizza", "beer", "ice cream");

$newphrase = str_replace($he althy, $yummy, $phrase);[/php]
Ronald :cool:

[ranjithpandi]

This will helpful for replacing strings in the braces.

<?php

$string = " {this} chocolate belongs to {that} boy";
$pattern = "/{([^}]+)}/i";
preg_match_all( $pattern,$strin g,$result);

$values = $result[1];
$replace_variab le = array('rep1', 'rep2');
$newphrase = str_replace($va lues, $replace_variab le, $string);
echo "<br> String : ".$string;
echo "<br> New String : ".$newphras e;

?>

[ronverdonk]

I think the original questionn was how to replace the entire {string}, including braces, not just the value within the braces. This sort of replacement is usually done in most templates. So {this} must be replaced by rep1.

Ronald :cool:

[ranjithpandi]

This will replace the entire string,includin g the braces.

$string = " {this} chocolate belongs to {that} boy";
$pattern = "/({[^}]+})/i";
preg_match_all( $pattern,$strin g,$result);

$values = $result[1];
$replace_variab le = array('rep1', 'rep2');
$newphrase = str_replace($va lues, $replace_variab le, $string);
echo "<br> String : ".$string;
echo "<br> New String : ".$newphras e;

Ranjith