A little help please Post: 302145561

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Top Forums Shell Programming and Scripting A little help please Post 302145561 by immyakram on Wednesday 14th of November 2007 03:56:46 PM

11-14-2007

Registered User

Thing is i understand evrything to that point but then when i get onto stuff liek testing with conditions - testing charachter data, testing numeric data and testing for files. Let me give you an example if you explain this little part would be great.

Although test is most often used for decision making, it can also be used on its own as follows

$ str1=abcd
$ test $str1 = abcd
$ echo $?
0

Note: unlike the variable assignment statement in the first line in the preceding example, the test command must have the equal sign surrounded by white space.

In this example, the shell sends three arguments to test. Strings must be equivalent in both length and character by character.

$ str1="abcd "
$ test "$str1" = abcd
$ echo
$?
1

immyakram

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LEARN ABOUT PHP

strcoll

STRCOLL(3)								 1								STRCOLL(3)

strcoll - Locale based string comparison

SYNOPSIS

       int strcoll (string  $str1, string  $str2)

DESCRIPTION

	Note that this comparison is case sensitive, and unlike strcmp(3) this function is not binary safe.

       strcoll(3)  uses  the  current  locale  for doing the comparisons. If the current locale is C or POSIX, this function is equivalent to str-
       cmp(3).

PARAMETERS

	      o $str1
		- The first string.

	      o $str2
		- The second string.

RETURN VALUES

	Returns < 0 if $str1 is less than $str2; > 0 if $str1 is greater than $str2, and 0 if they are equal.

CHANGELOG

       +--------+------------------------------------+
       |Version |				     |
       |	|				     |
       |	|	     Description	     |
       |	|				     |
       +--------+------------------------------------+
       | 4.2.3	|				     |
       |	|				     |
       |	|  This function now works on win32. |
       |	|				     |
       +--------+------------------------------------+
SEE ALSO

       preg_match(3), strcmp(3), strcasecmp(3), substr(3), stristr(3), strncasecmp(3), strncmp(3), strstr(3), setlocale(3).

PHP Documentation Group 														STRCOLL(3)