handling a string as PHP [duplicate]

This question already has an answer here: Closed 10 years ago.

Possible Duplicate:

PHP: Calculate 开发者_C百科a math function f(x) in a string

I have a little problem. I have a string, such that,

$a = '(2+3+4)';

How can I handle $a such that the output, echo $a should be 9 instead of just giving (2+3+4).

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If your code is indeed $a = (2+3+4), then echo will output 9.

It sounds like you have it a string. You could eval() that string to get the 9.

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Have a look at php's Eval function

$string = "(2+3+4)";
eval('$a = '.$string);
echo $a;