WeberDev.com -> PHP Manual -> 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 all 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, the output-control functions can be used 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);

?>