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Built-In Functions
Rindex

  • The rindex() function returns the position (integer offset) of the last occurence of a substring

  • Returns -1 if the substring cannot be found

      $myString = "Hello World";
      $val = rindex( $myString, "o" );
      # Yields 7

      $val = rindex( $myString, "x" );
      # Yields -1

  • You may also specify an offset from which to start the search

      $myString = "Hello World";
      $val = rindex( $myString, "o", 6 );
      # Yields 4