strposa
Example: strposa ( string $haystack, array $needle [, int $offset = 0 ] )
This function searches a string for every element/value found in an array and returns the position of the first element/value found in the string. In technical terms, it searches for mutilple needles in a haystack and returns the position of the first occurance found in the string. Note: this function is case sensitive.
/**
* strposa ( string $haystack, array $needle [, int $offset = 0 ] )
*
* @param string $haystack
* @param mixed $needles - should be an array, but can be any
* string, int, or array
* @param integer $offset
* @return the position of the first items found in the array
*
* Original contibutions by:
* ==============================
* - Leonardo Martinez ( http://www.leonardomartinez.com/contact/ )
* - vbracco at gmail dot com
* - nathan at bitmesh dot com
* - dpharris at llu dot edu
*
* Description:
* ========================
* - searches for mutilple needles in a haystack and returns
* the position of the first occurance, case-sensitive.
* - finds the position of the first occurrence of array (needles)
* in the haystack string, case-sensitive.
* - if you are looking for more than one needle in the haystack,
* this function will replace php's strpos()
* - if you searching for the position of a single value, it is
* recommended that you use strpos().
*
*
* Notes:
* ====================================
* below are several functions that search for the position of a needle)
* ---------------------------------------------------------------------------
* strpos() - Returns the position of the first occurrence of a needle
* in the haystack string, case-sensitive.
* stripos() - Returns the position of the first occurrence of a needle
* in the haystack string, case-insensitive.
* strrpos() - Returns the position of the last occurrence of needle in
* the haystack string, case-sensitive. Note that the needle
* in this case can only be a single character in PHP 4. If a
* string is passed as the needle, then only the first character
* of that string will be used.
* strripos() - Returns the position of the last occurrence of needle in the
* haystack string, case-insensitive.
*
*/
function strposa( $haystack, $needles, $offset=0 ){
if (!is_array( $needles )) $needles = array( $needles );
$result = array();
foreach( $needles as $needle ){
if ( strpos( $haystack, $needle, $offset) !== false ) {
$result[] = strpos( $haystack, $needle, $offset);
}
}
if( empty( $result )) return false;
return min( $result );
}
$haystack = 'How much wood would a woodchuck chuck if a woodchuck could chuck wood';
$needles = array('woodchuck', 'wood', 'could', 'chuck');
$string = strposa( $haystack, $needles );
print_r($string);
/**
* the result will be 9,
* it found the word 'wood' first on the 9th element of the haystack.
* remember that it's really the 10th item on the list, but php starts with 0 (zero).
*/