PYTHON strstr

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

PHP strstr

PHP original manual for strstr [ show | ]


(PHP 4, PHP 5)

strstrFind first occurrence of a string


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

Returns part of haystack string from the first occurrence of needle to the end of haystack .

Note: This function is case-sensitive. For case-insensitive searches, use stristr().

Note: If you only want to determine if a particular needle occurs within haystack , use the faster and less memory intensive function strpos() instead.



The input string.


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), strstr() returns the part of the haystack before the first occurrence of the needle .

Return Values

Returns the portion of string, or FALSE if needle is not found.


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


Example #1 strstr() example

$domain strstr($email'@');
$domain// prints

$user strstr($email'@'true); // As of PHP 5.3.0
echo $user// prints name

See Also

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