Hello, can someone please explain to me why this happens:
Surely an undefined variable cannot be both zero-length and non-zero-length at the same time? I always have problems with the -n test flag - does it actually work?
Hi
In the shell scripted I'm trying to write!
I would like to test the last character in a string. The string is a path/directory and I want to see if the last character is a '/'.
The string (path/directory) is inputted by a user. If the '/' character isn't present then I want to be able to... (11 Replies)
Hi guys, I hope you can help me with my problem.
I have a text file that contains lines like this:
78 ANGELO -809.05
79 ANGELO2 -5,000.06
I need to find all occurences of amounts that are negative and replace them with x's
78 ANGELO xxxxxxx
79... (4 Replies)
Hello All,
Plz help me with:
I have a csv file with data separated by ',' and optionally enclosed by "". I want to check each of these values to see if they exceed the specified string length, and if they do I want to cut just that value to the max length allowed and keep the csv format as it... (9 Replies)
Hi
lets say i have a variable
output="string"
how can you find the length of the string contained in this variable? i guess "wc" cannot be used. its only for files. (8 Replies)
I've never tested file length with shell before and I'm having problems. What I'm doing is testing $filename and $filename.bak to see if there is a difference. so I use 'diff' for that and send it to an output file 'dif.txt'. Now I wanna see if the length of 'dif.txt' is zero or not. that's where... (1 Reply)
Hello, I'm new to shell scripting and need a little help please.
I'm working on a script that asks the user to input a name that can be 1 to 12 alphanumeric characters and can have dots(.) dashes(-) and spaces. I want to test that the answer is valid and if not make the user try again. I have no... (4 Replies)
Helo,
I have character array of sixe 128
char filename
now I have one problem that when I enter filename as nothing I got value
as " " ",`\0` " .
when I find this string length ( " ",`\0`) as 1(one).
actually I want to make this length as zero.
so what should I do (10 Replies)
HI
In my script, i am reading the input from the user and want to find the length of the string.
The input may contain leading spaces. Right now, when leading spaces are there, they are not counted.
Kindly help me
My script is like below. I am using the ksh.
#!/usr/bin/ksh
echo... (2 Replies)
Hello, Unix-Forums!
Is there a command that can check how long a user-entered string is?
Please don't give me a code, just the name of the command (playing around yourself is much more fun than just pasting code)
edit: I'm sorry, first hit of the forum search gave me the answer. (1 Reply)
Discussion started by: intelinside
1 Replies
LEARN ABOUT PHP
substr_count
SUBSTR_COUNT(3) 1 SUBSTR_COUNT(3)substr_count - Count the number of substring occurrencesSYNOPSIS
int substr_count (string $haystack, string $needle, [int $offset], [int $length])
DESCRIPTION substr_count(3) returns the number of times the $needle substring occurs in the $haystack string. Please note that $needle is case sensi-
tive.
Note
This function doesn't count overlapped substrings. See the example below!
PARAMETERS
o $haystack
- The string to search in
o $needle
- The substring to search for
o $offset
- The offset where to start counting
o $length
- The maximum length after the specified offset to search for the substring. It outputs a warning if the offset plus the length is
greater than the $haystack length.
RETURN VALUES
This function returns an integer.
CHANGELOG
+--------+-----------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+-----------------------------------------------+
| 5.1.0 | |
| | |
| | Added the $offset and the $length parameters |
| | |
+--------+-----------------------------------------------+
EXAMPLES
Example #1
A substr_count(3) example
<?php
$text = 'This is a test';
echo strlen($text); // 14
echo substr_count($text, 'is'); // 2
// the string is reduced to 's is a test', so it prints 1
echo substr_count($text, 'is', 3);
// the text is reduced to 's i', so it prints 0
echo substr_count($text, 'is', 3, 3);
// generates a warning because 5+10 > 14
echo substr_count($text, 'is', 5, 10);
// prints only 1, because it doesn't count overlapped substrings
$text2 = 'gcdgcdgcd';
echo substr_count($text2, 'gcdgcd');
?>
SEE ALSO count_chars(3), strpos(3), substr(3), strstr(3).
PHP Documentation Group SUBSTR_COUNT(3)