Dumps information about a variable
Syntax
var_dump(mixed $value, mixed ...$values): void
Parameters
valueThe expression to dump.
valuesFurther expressions to dump.
Return
No value is returned.
Examples
1 · value · bool
<? $value = false; var_dump($value); ?>
bool(false)
2 · value · int
<? $value = 0; var_dump($value); ?>
int(0)
3 · value · float
<? $value = 0.0; var_dump($value); ?>
float(0)
4 · value · string
<? $value = "0"; var_dump($value); ?>
string(1) "0"
5 · value · array
<? $value = array(0, 1, array(0, 1)); var_dump($value); ?>
array(3) {
[0]=>
int(0)
[1]=>
int(1)
[2]=>
array(2) {
[0]=>
int(0)
[1]=>
int(1)
}
}
6 · value · object · standard class
<? $value = new stdclass; $value->var = 0; var_dump($value); ?>
object(stdClass)#1 (1) {
["var"]=>
int(0)
}
7 · value · object · custom class
<?
class myclass
{
public $var;
}
$value = new myclass;
$value->var = 0;
var_dump($value);
?>object(myclass)#1 (1) {
["var"]=>
int(0)
}
8 · values
<?
class myclass
{
public $var;
}
$value1 = false;
$value2 = 0;
$value3 = 0.0;
$value4 = "0";
$value5 = array(0, 1, array(0, 1));
$value6 = new stdclass;
$value6->var = 0;
$value7 = new myclass;
$value7->var = 0;
var_dump($value1, $value2, $value3, $value4, $value5, $value6, $value7);
?>bool(false)
int(0)
float(0)
string(1) "0"
array(3) {
[0]=>
int(0)
[1]=>
int(1)
[2]=>
array(2) {
[0]=>
int(0)
[1]=>
int(1)
}
}
object(stdClass)#1 (1) {
["var"]=>
int(0)
}
object(myclass)#2 (1) {
["var"]=>
int(0)
}
