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Bug #17429 Using /e option within a class unable to call a local method
Submitted: 2002-05-25 19:23 UTC Modified: 2002-06-01 11:51 UTC
From: sal at stodge dot org Assigned:
Status: Not a bug Package: PCRE related
PHP Version: 4.2.1 OS: Linux Redhat 7.3
Private report: No CVE-ID: None
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From: sal at stodge dot org
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 [2002-05-25 19:23 UTC] sal at stodge dot org
If you use preg_replace with the /e option from within a class you may want to call a method of the current class to perform the lookup. Intuativly a user might expect this code to work:

$whatever=preg_replace( $pattern,"$this->whatever('\\1')", $value );

That 2nd parameter is being evaluated outside the current class... In this context "$this" has no meaning outside the object,  So a method like "$this->whatever{foo)" can never be evaluated directly by this command.

The function works fine if you use it according to the instructions - that is you provide it with a globally available function it will work perfectly.

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 [2002-06-01 11:51 UTC]
You forgot to escape the '$' character:

$whatever=preg_replace( $pattern,"\$this->whatever('\\1')", $value );
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Last updated: Thu Nov 30 17:01:30 2023 UTC