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 all public, private and protected properties of objects will be
returned in the output.
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Parameters
- expression
The variable you want to export.
Return Values
No value is returned.
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範例 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: |