Question

How to get the data type of a variable in PHP

Answer 1

$n = 10000;

var_dump($n);

 
/*
run:

int(10000) 
 
*/

 

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Answer 2

$n = 3.14;

var_dump($n);

 
/*
run:

float(3.14) 
 
*/

 

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Answer 3

$n = "abc";

var_dump($n);

 
/*
run:

string(3) "abc" 
 
*/

 

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Answer 4

$n = "a";

var_dump($n);

 
/*
run:

string(1) "a" 
 
*/

 

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Answer 5

$n = 'b';

var_dump($n);

 
/*
run:

string(1) "b" 
 
*/

 

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Answer 6

$n = null;

var_dump($n);

 
/*
run:

NULL 
 
*/

 

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Answer 7

$a = true;
var_dump($a);

echo "<br />";

$b = false;
var_dump($b);

 
/*
run:

bool(true)
bool(false) 
 
*/

 

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Answer 8

$arr = array("C", "Assembler", "PC-MAC");

var_dump($arr);
 
/*
run:

array(3) { [0]=> string(1) "C" [1]=> string(9) "Assembler" [2]=> string(6) "PC-MAC" } 

*/

 

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Answer 9

class Test 
{
    function F() 
    {
        echo "class Test";
    }
}

$o = new Test();

var_dump($o);
 
/*
run:

object(Test)#1 (0) { } 

*/

 

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