var_dump
(PHP 3 >= 3.0.5, PHP 4, PHP 5)
var_dump -- Dumps information about a variable
Description
void
var_dump ( mixed expression [, mixed expression [, ...]] )
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 only public, private and protected properties of objects will be returned in the output.
Tip: As with anything that outputs its result directly to the browser, you can use the output-control functions to capture the output of this function, and save it in a string (for example).
Parameters
- expression
The variable you want to export.
Return Values
No value is returned.
Examples
Example 1. var_dump() example <?php
$a = array(1, 2, array("a", "b", "c"));
var_dump($a);
?> |
The above example will output: 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);
?> |
The above example will output: |