The SplFixedArray class
SplFixedArray
&reftitle.intro;
The SplFixedArray class provides the main functionalities of array. The
main differences between a SplFixedArray and a normal PHP array is that
the SplFixedArray is of fixed length and allows only integers within
the range as indexes. The advantage is that it allows a faster array
implementation.
&reftitle.classsynopsis;
SplFixedArray
SplFixedArray
Iterator
ArrayAccess
Countable
&Methods;
&reftitle.examples;
<classname>SplFixedArray</classname> usage example
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";
}
?>
]]>
&example.outputs;
&reference.spl.entities.splfixedarray;