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(PHP 5 >= 5.3.0)
SplFixedArray::__construct — Constructs a new fixed array
$size
= 0
] )
Initializes a fixed array with a number of NULL
values equal to size
.
size
The size of the fixed array.
This expects a number between 0 and PHP_INT_MAX
.
没有返回值。
Throws InvalidArgumentException when size
is a negative
number.
Raises E_WARNING
when size
cannot be parsed as a number.
Example #1 SplFixedArray::__construct() example
<?php
$array = new SplFixedArray ( 5 );
$array [ 1 ] = 2 ;
$array [ 4 ] = "foo" ;
foreach( $array as $v ) {
var_dump ( $v );
}
?>
以上例程会输出:
NULL int(2) NULL NULL string(3) "foo"