substr_count
substr_count — Count the number of substring occurrences
int substr_count ( string
$haystack , string $needle [, int $offset = 0 [, int $length ]] )
substr_count() returns the number of times the
needle substring occurs in the haystack string. Please note that needle is case sensitive.Parameters ¶
haystack- The string to search in
needle- The substring to search for
offset- The offset where to start counting. If the offset is negative, counting starts from the end of the string.
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
haystacklength. A negative length counts from the end ofhaystack.
<?php $str = 'abc.phpmypassion.com';
echo strlen($str); // 21echo substr_count($str, '.'); //// the string is reduced to 'phpmyps', so it prints 1echo substr_count($str, '.', 4);//the text is reduced to 'phpm',so it prints 0echo substr_count($str, '.', 4, 4);// generates a warning because 10+12 > 21echo substr_count($str, '.', 10, 12);// prints only 3, because it doesn't count overlapped substrings$str2= 'phpmypassion.com'; echo substr_count($str2, 'p');?>
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