PYTHON stripos

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Python replacement for PHP's stripos [ edit | history ]
pos = haystack.upper().find(needle.upper(), offset)

PHP stripos

PHP original manual for stripos [ show | ]


(PHP 5)

striposFind position of first occurrence of a case-insensitive string


int stripos ( string $haystack , string $needle [, int $offset= 0 ] )

Returns the numeric position of the first occurrence of needle in the haystack string.

Unlike strpos(), stripos() is case-insensitive.



The string to search in


Note that the needle may be a string of one or more characters.

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 .

Return Values

If needle is not found, stripos() will return boolean FALSE.


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

$mystring1 'xyz';
$mystring2 'ABC';

$pos1 stripos($mystring1$findme);
$pos2 stripos($mystring2$findme);

// Nope, 'a' is certainly not in 'xyz'
if ($pos1 === false) {
"The string '$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 ($pos2 !== false) {
"We found '$findme' in '$mystring2' at position $pos2";


Note: This function is binary-safe.

See Also

  • strpos() - Find position of first occurrence of a string
  • strrpos() - Find position of last occurrence of a char in a string
  • strrchr() - Find the last occurrence of a character in a string
  • substr() - Return part of a string
  • stristr() - Case-insensitive strstr
  • strstr() - Find first occurrence of a string
  • strripos() - Find position of last occurrence of a case-insensitive string in a string
  • str_ireplace() - Case-insensitive version of str_replace.