(PHP 5 >= 5.3.0, PHP 7)
Examples:
SplFixedArray usage example
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 | <?php // Initialize the array with a fixed length $array = new SplFixedArray(5); $array [1] = 2; $array [4] = "foo" ; var_dump( $array [0]); // NULL var_dump( $array [1]); // int(2) var_dump( $array [ "4" ]); // string(3) "foo" // Increase the size of the array to 10 $array ->setSize(10); $array [9] = "asdf" ; // Shrink the array to a size of 2 $array ->setSize(2); // The following lines throw a RuntimeException: Index invalid or out of range try { var_dump( $array [ "non-numeric" ]); } catch (RuntimeException $re ) { echo "RuntimeException: " . $re ->getMessage(). "\n" ; } try { var_dump( $array [-1]); } catch (RuntimeException $re ) { echo "RuntimeException: " . $re ->getMessage(). "\n" ; } try { var_dump( $array [5]); } catch (RuntimeException $re ) { echo "RuntimeException: " . $re ->getMessage(). "\n" ; } ?> |
The above example will output:
NULL int(2) string(3) "foo" RuntimeException: Index invalid or out of range RuntimeException: Index invalid or out of range RuntimeException: Index invalid or out of range