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Top Forums Shell Programming and Scripting PERL : Use of a variable in a tr Post 302491403 by sinpeak on Thursday 27th of January 2011 10:28:14 AM
Old 01-27-2011
PERL : Use of a variable in a tr

Hi,

I want to count the number of occurences of a character in a string variable ($str). The character is stored in a another variable ($sepchr). I am using tr as :

Code:
 
$count = ($str =~ tr/$sepchr//);

This did not work. I found in another thread about using eval. I used eval as :

Code:
 
$count = ($str =~ eval "tr/$sepchr//");

But this too did not work.

Please advise.

Thanks
sinpeak
 

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MB_STRTOLOWER(3)							 1							  MB_STRTOLOWER(3)

mb_strtolower - Make a string lowercase

SYNOPSIS
string mb_strtolower (string $str, [string $encoding = mb_internal_encoding()]) DESCRIPTION
Returns $str with all alphabetic characters converted to lowercase. PARAMETERS
o $str - The string being lowercased. o $encoding -The $encoding parameter is the character encoding. If it is omitted, the internal character encoding value will be used. RETURN VALUES
$str with all alphabetic characters converted to lowercase. UNICODE
For more information about the Unicode properties, please see http://www.unicode.org/unicode/reports/tr21/. By contrast to strtolower(3), 'alphabetic' is determined by the Unicode character properties. Thus the behaviour of this function is not affected by locale settings and it can convert any characters that have 'alphabetic' property, such as A-umlaut (A). EXAMPLES
Example #1 mb_strtolower(3) example <?php $str = "Mary Had A Little Lamb and She LOVED It So"; $str = mb_strtolower($str); echo $str; // Prints mary had a little lamb and she loved it so ?> Example #2 mb_strtolower(3) example with non-Latin UTF-8 text <?php $str = "Txiotn a nE Baos unuvn yn, dpaokeCei unp vw0po kuvs"; $str = mb_strtolower($str, 'UTF-8'); echo $str; // Prints txiotn a nE Baos unuvn yn, dpaokeCei unp vw0po kuvs ?> SEE ALSO
mb_strtoupper(3), mb_convert_case(3), strtolower(3). PHP Documentation Group MB_STRTOLOWER(3)
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