03-28-2008
get substr?
Hi,
I have a long string like,
aabab|bcbcbcbbc|defgh|paswd123 dedededede|efef|ghijklmn|paswd234 ghghghghgh|ijijii|klllkkk|paswd345 lmlmlmmm|nononononn|opopopopp|paswd456
This string is devided into one space between substrings. This substrings are,
aabab|bcbcbcbbc|defgh|paswd123
dedededede|efef|ghijklmn|paswd234
ghghghghgh|ijijii|klllkkk|paswd345
lmlmlmmm|nononononn|opopopopp|paswd456
Now i want to get paswd234 by searching corresponding ghijklmn
similarly want to get paswd345 by searching corresponding klllkkk
But above long string is dynamic, means may be some more substrings can add to this long string or may be some substrings can be removed from this long string.
could any one pls help me in this.
Thanks in advance.
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LEARN ABOUT PHP
substr_count
SUBSTR_COUNT(3) 1 SUBSTR_COUNT(3)
substr_count - Count the number of substring occurrences
SYNOPSIS
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)