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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:
float(3.1) bool(true)

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var_dump

Description

Parameters

Return Values

Examples

See Also