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PHP Functions
Function: stripos (PHP 5) stripos -- Find position of first occurrence of a case-insensitive stringDescriptionint stripos ( string haystack, string needle [, int offset] )Returns the numeric position of the first occurrence of needle in the haystack string . Unlike strpos() , stripos() is case-insensitive. Note that the needle may be a string of one or more characters. If needle is not found, stripos() will return boolean FALSE . Warning This function may return Boolean FALSE , but may also return a non-Boolean value which evaluates to FALSE , such as 0 or "". Please read the section on Booleans for more information. Use the === operator for testing the return value of this function.
Example 1. stripos() examples <?php $findme = 'a'; $mystring1 = 'xyz'; $mystring2 = 'ABC'; $pos1 = stripos($mystring1, $findme); $pos2 = stripos($mystring2, $findme); // Nope, 'a' is certainly not in 'xyz' if ($pos1 === false) { echo "The string '$findme' was not found in the string '$mystring1'"; } // Note our use of ===. Simply == would not work as expected // because the position of 'a' is the 0th (first) character. if ($pos2 !== false) { echo "We found '$findme' in '$mystring2' at position $pos2"; } ?> If needle is not a string, it is converted to an integer and applied as the ordinal value of a character. The optional offset parameter allows you to specify which character in haystack to start searching. The position returned is still relative to the beginning of haystack . Note: This function is binary-safe. Related Function(s) |