substr_compare() - string

substr_compare() compares main_str
   from position offset with str
   up to length characters.

Parameters : 
 main_str - The main string being compared. 
 str - The secondary string being compared. 
 offset - The start position for the comparison. If negative, it starts counting
       from the end of the string. 
 length - The length of the comparison. The default value is the largest of the
       length of the str compared to the length of
       main_str less the
       offset. 
 case_insensitivity - If case_insensitivity is TRUE, comparison is
       case insensitive. 

Syntax

int substr_compare
    ( string $main_str
   , string $str
   , int $offset
   [, int $length
   [, bool $case_insensitivity = false
  ]] )

Example

<?phpecho substr_compare("abcde", "bc", 1, 2); // 0echo substr_compare("abcde", "de", -2, 2); // 0echo substr_compare("abcde", "bcg", 1, 2); // 0echo substr_compare("abcde", "BC", 1, 2, true); // 0echo substr_compare("abcde", "bc", 1, 3); // 1echo substr_compare("abcde", "cd", 1, 2); // -1echo substr_compare("abcde", "abc", 5, 1); // warning?>

Output / Return Value

Limitations

Alternatives / See Also

Reference