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Replace with Dynamic variable in preg_replace

  • MarPlo
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Post February 19th, 2012, 11:50 pm

Hi
I'm trying the following code:
Code: [ Select ]
$t = '12<-- AB_C -->';
$AB_C = 'abc';
echo preg_replace('/\<-- ([A-Z_]+) --\>/', "$$1", $t);
  1. $t = '12<-- AB_C -->';
  2. $AB_C = 'abc';
  3. echo preg_replace('/\<-- ([A-Z_]+) --\>/', "$$1", $t);

I want to get "12abc" , but it outputs: 12$AB_C , so, it not recognize the replacement as dynamic variable.
Is it any way to use the matched word in preg_replace() as a variable, or dynamic variable?
  • Anonymous
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Post February 19th, 2012, 11:50 pm

  • MarPlo
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Post February 20th, 2012, 7:30 am

For those who look for a solution to this problem, the '/e' flag, which evalates the replacement, solved the problem, and returns the results i want, using:
Code: [ Select ]
preg_replace('/\<-- ([A-Z_]+) --\>/e', "$$1", $t);
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