PYTHON stristr

is this article helpful?
Python replacement for PHP's stristr [ edit | history ]
pos = haystack.upper().find(needle.upper(), offset) # The offset is optional
if pos < 0: # not found
    return None
    return haystack[pos:]

PHP stristr

PHP original manual for stristr [ show | ]


(PHP 4, PHP 5)

stristrCase-insensitive strstr()


string stristr ( string $haystack , mixed $needle [, bool $before_needle= false ] )

Returns all of haystack from the first occurrence of needle to the end.



The string to search in


If needle is not a string, it is converted to an integer and applied as the ordinal value of a character.


If TRUE (the default is FALSE), stristr() returns the part of the haystack before the first occurrence of the needle .

needle and haystack are examined in a case-insensitive manner.

Return Values

Returns the matched substring. If needle is not found, returns FALSE.


Version Description
5.3.0 Added the optional parameter before_needle .
4.3.0 stristr() was made binary safe.


Example #1 stristr() example

stristr($email'e'); // outputs
echo stristr($email'e'true); // As of PHP 5.3.0, outputs US

Example #2 Testing if a string is found or not

'Hello World!';
stristr($string'earth') === FALSE) {
'"earth" not found in string';
// outputs: "earth" not found in string

Example #3 Using a non "string" needle

stristr($string97); // 97 = lowercase a
// outputs: APPLE


Note: This function is binary-safe.

See Also

  • strstr() - Find first occurrence of a string
  • strrchr() - Find the last occurrence of a character in a string
  • substr() - Return part of a string
  • preg_match() - Perform a regular expression match