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Doc Bug #15937 Call-time pass-by-reference has been deprecated
Submitted: 2002-03-07 13:22 UTC Modified: 2002-03-08 03:55 UTC
From: nohn@php.net Assigned:
Status: Not a bug Package: Documentation problem
PHP Version: 4.0.5 OS: SuSE Linux 6.0
Private report: No CVE-ID: None
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 [2002-03-07 13:22 UTC] nohn@php.net 
Warning: Call-time pass-by-reference has been deprecated - argument passed by value; If you would like to pass it by reference, modify the declaration of strlen(). If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file. However, future versions may not support this any longer. in <xxx> line 653

To what shall I modify the declartion of strlen? It's not documented anywhere...

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 [2002-03-07 13:31 UTC] cynic@php.net 
there's nothing wrong with strlen(). why do you pass it the argument by reference? strlen() doesn't modify it, so it's completely useless.

this PR is bogus.
 [2002-03-07 14:05 UTC] nohn@php.net 
reopened this bug.

the reason for me to use the call-by-reference is performance...
 [2002-03-07 14:07 UTC] derick@php.net 
Performance is of no concern here. If a function doesn't modify a var, it wont copy it. As strlen() doesn't modify the value, it is not copied, and no performance is lost.

Making this bogus again.
 [2002-03-07 14:13 UTC] eschmid@php.net 
Sebastian, please make a performance comparison. If a by-reference is faster, so make a note in the docs and mark this error as deleted.
 [2002-03-08 03:55 UTC] cynic@php.net 
Egon, I don't know about builtin functions, but passing arguments by reference is *much* slower in userland functions.
I don't see a reason it should be any different with builtin ones.
 
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