var_dump
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var_dump
(PHP 4, PHP 5)
var_dump — Dumps information about a variable
Report a bug Description
void var_dump ( mixed $expression [, mixed $... ] )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.
TipAs with anything that outputsits result directly to the browser, the output-control functions can be used to capturethe output of this function, and save it in astring (for example).
Report a bug Parameters
- expression
The variable you want to export.
Report a bug Return Values
No value is returned.
Report a bugExamples
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:
float(3.1)bool(true)
var_dump
(PHP 4, PHP 5)
var_dump — Dumps information about a variable
Report a bug
Description
void var_dump ( mixed $expression [, mixed $... ] )
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 outputsits result directly to the browser, the output-control functions can be used to capturethe output of this function, and save it in astring (for example).
Report a bug
Parameters
- expression
The variable you want to export.
Report a bug
Return Values
No value is returned.
Report a bug
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:
float(3.1)bool(true)
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