How to replace value in string using regular expression in php?

Question

Here my string ($commit$ + $Bug$)/$HR$*($Leader$^$IT$) ... I want to replace all $variable$ replace with 1...

like (1 + 1)/1*(1^1) ...

is there possible to replace with value 1 ??? how??

Don't care which variable in between $ _ _$...

Please Help me...

Answer 1

$result = preg_replace(
    '/\$ # Match $
    \w+  # Match one or more alphanumeric characters
    \$   # Match $/x', 
    '1', $subject);

This assumes that only the characters [A-Za-z0-9_] are legal between $ and $ .

Answer 2

Try this one

\$(.*?)*\$  Or (\$\w*\$)+
preg_replace('/\$(.*?)*\$/i', '1', '($commit$ + $Bug$)/$HR$*($Leader$^$IT$)');

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Answer 3

$str = '($commit$ + $Bug$)/$HR$*($Leader$^$IT$)';
$str = preg_replace('/\$(.*?)\$/', '1', $str);
echo $str;