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Bug #41785 function strtr
Submitted: 2007-06-23 05:49 UTC Modified: 2007-06-23 08:34 UTC
From: saint at mail dot ntch dot edu dot tw Assigned:
Status: Not a bug Package: Unknown/Other Function
PHP Version: 5.2.3 OS: CentOS5
Private report: No CVE-ID: None
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 [2007-06-23 05:49 UTC] saint at mail dot ntch dot edu dot tw 
Description:
------------
i hope string 0554 to 0673
print strtr( '8081;0647;0554' , '0554', '0673')
print string 8081;0637;0773
i hope string is 8081;0647;0673
print str_replace( '8081;0647;0554', '0554', '0673' );
print string 8081;0647;0673
string is right

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 [2007-06-23 08:34 UTC] rasmus@php.net 
strtr works on a per-character basis.  Not on entire strings like that.  The output is correct.  The documentation is very clear on this:

 "This function returns a copy of str, translating all occurrences of each character in from to the corresponding character in to."

So in your case you are mapping 0554 to 0673 which doesn't actually make any sense.  You are saying that 0 becomes 0, 5 becomes 6, 5 becomes 7 and 4 becomes 3.  Since you have two mappings for 5, PHP takes the second one, so your translation table is 5->7 and 4->3.  Therefore 0647;0554 becomes 0636;0773
 
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