(PHP 4, PHP 5)
var_dump — Dumps information about a variable
This function displays structured information about one or more expressions that includes its type and value. Arrays and objects are explored recursively with values indented to show structure.
In PHP 5 all public, private and protected properties of objects will be returned in the output.
Som med alt andet der udskriver data direkte til browseren, kan du bruge output-control funktioner til at fange data returneret af denne funktion, og gemme det i en streng (for eksempel).
The variable you want to export.
Ingen værdi er returneret.
Example#1 var_dump() example
<?php
$a = array(1, 2, array("a", "b", "c"));
var_dump($a);
?>
Ovenstående eksempel vil udskrive:
array(3) { [0]=> int(1) [1]=> int(2) [2]=> array(3) { [0]=> string(1) "a" [1]=> string(1) "b" [2]=> string(1) "c" } }
<?php
$b = 3.1;
$c = true;
var_dump($b, $c);
?>
Ovenstående eksempel vil udskrive:
float(3.1) bool(true)