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: |