php inarray为零值返回TRUE

Question

I am trying to use in_array function and its returning TRUE if the value is ZERO. var_dump also returning bool TRUE

$srcElement=0;
var_dump(in_array($srcElement,array('HA','DA','SA','CA')));
if (in_array($srcElement,array('HA','DA','SA','CA')))
{
    echo "VALUE EXISTS";
}
else
{
 echo "VALUE NOT FOUND";   
}

and getting output as

bool(true) VALUE EXISTS

in case of ZERO if I use any other integers its returning ELSE PART. is there any specific reason behind this ?

Answer 1

There is type conversions, while doing the comparisons. Try with strict comparisons.

in_array($srcElement,array('HA','DA','SA','CA'),true);

var_dump(in_array($srcElement,array('HA','DA','SA','CA')));

will print false .