01-19-2010
What in the world does $$ mean?
If I type "echo $$" in to the command line it outputs some random number but it outputs the same one every time. What is this?
7 More Discussions You Might Find Interesting
1. Solaris
just wanted to give salutations to all in here.
i hope to contribute as much as i take.
happy "unix-ing" :b: (0 Replies)
Discussion started by: JeepResQ
0 Replies
2. What is on Your Mind?
What does the world need now.... ???
Feel free to suggest new items to the poll .... we might add them :) (25 Replies)
Discussion started by: Neo
25 Replies
3. Programming
Hello! I know I must take the efforts of learning C..! I need to recompile a binary with the following at the beginning: test if a file exists, remove it and exit. All in "C". As simple as this in sh:
file=/tmp/filename
if ; then
rm -f $file
exit 0
fi
Thanks! (8 Replies)
Discussion started by: teresaejunior
8 Replies
4. What is on Your Mind?
How will the world end (someday long into the future, we hope)? (68 Replies)
Discussion started by: Neo
68 Replies
5. Programming
Hello!
I have a question to native English-speaking people. In the popular program's "hello world" greeting, what meaning the "world" has: "all", "everybody", "people", "friends" or "whole world", "planet", "Earth", "Universe"?
In other words, to whom this greeting is addressed: to the... (14 Replies)
Discussion started by: Eugene Muzychen
14 Replies
6. What is on Your Mind?
Just wanna say "Hello World!" :) (6 Replies)
Discussion started by: ment0smintz
6 Replies
7. What is on Your Mind?
This is an excellent video comment on modern society and the remix is good too:
https://www.youtube.com/watch?v=5DU1B_XkyIk
5DU1B_XkyIk
Watch the video above and post your comments. (3 Replies)
Discussion started by: Neo
3 Replies
STRISTR(3) 1 STRISTR(3)
stristr - Case-insensitivestrstr(3)
SYNOPSIS
string stristr (string $haystack, mixed $needle, [bool $before_needle = false])
DESCRIPTION
Returns all of $haystack starting from and including the first occurrence of $needle to the end.
PARAMETERS
o $haystack
- The string to search in
o $needle
- If $needle is not a string, it is converted to an integer and applied as the ordinal value of a character.
o $before_needle
- If TRUE, stristr(3) returns the part of the $haystack before the first occurrence of the $needle (excluding needle).
$needle and $haystack are examined in a case-insensitive manner.
RETURN VALUES
Returns the matched substring. If $needle is not found, returns FALSE.
CHANGELOG
+--------+-----------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+-----------------------------------------------+
| 5.3.0 | |
| | |
| | Added the optional parameter $before_needle. |
| | |
| 4.3.0 | |
| | |
| | stristr(3) was made binary safe. |
| | |
+--------+-----------------------------------------------+
EXAMPLES
Example #1
stristr(3) example
<?php
$email = 'USER@EXAMPLE.com';
echo stristr($email, 'e'); // outputs ER@EXAMPLE.com
echo stristr($email, 'e', true); // As of PHP 5.3.0, outputs US
?>
Example #2
Testing if a string is found or not
<?php
$string = 'Hello World!';
if(stristr($string, 'earth') === FALSE) {
echo '"earth" not found in string';
}
// outputs: "earth" not found in string
?>
Example #3
Using a non "string" needle
<?php
$string = 'APPLE';
echo stristr($string, 97); // 97 = lowercase a
// outputs: APPLE
?>
NOTES
Note
This function is binary-safe.
SEE ALSO
strstr(3), strrchr(3), stripos(3), strpbrk(3), preg_match(3).
PHP Documentation Group STRISTR(3)