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Top Forums Shell Programming and Scripting How to extract field from variable more efective Post 302159915 by radoulov on Saturday 19th of January 2008 08:06:04 AM
Old 01-19-2008
Quote:
Originally Posted by pp56825
What if the fileds in line are separated by : or ~ ?

found that i can export IFS=":".
[...]
With ksh93 and bash you could use something like this:

Code:
$ str="one:two-three" oIFS=$IFS IFS=':-' a=($str) IFS=$oIFS
$ echo ${a[0]}
one
$ echo ${a[1]}
two
$ echo ${a[2]}
three

With zsh:

Code:
% str=one:two:three
% a=(${(s.:.)str})   
% echo $a[1]
one
% echo $a[2]
two
% str=one-two-three
% a=(${(s.-.)str})   
% echo $a[3]         
three

 

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STRLEN(3)								 1								 STRLEN(3)

strlen - Get string length

SYNOPSIS
int strlen (string $string) DESCRIPTION
Returns the length of the given $string. PARAMETERS
o $string - The string being measured for length. RETURN VALUES
The length of the $string on success, and 0 if the $string is empty. CHANGELOG
+--------+---------------------------------------------------+ |Version | | | | | | | Description | | | | +--------+---------------------------------------------------+ | 5.3.0 | | | | | | | Prior versions treated arrays as the string | | | Array, thus returning a string length of 5 and | | | emitting an E_NOTICE level error. | | | | +--------+---------------------------------------------------+ EXAMPLES
Example #1 A strlen(3) example <?php $str = 'abcdef'; echo strlen($str); // 6 $str = ' ab cd '; echo strlen($str); // 7 ?> NOTES
Note strlen(3) returns the number of bytes rather than the number of characters in a string. Note strlen(3) returns NULL when executed on arrays, and an E_WARNING level error is emitted. SEE ALSO
count(3), grapheme_strlen(3), iconv_strlen(3), mb_strlen(3). PHP Documentation Group STRLEN(3)
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