arrays - symbol and decimal number true in php -


i have script this

$number = range(0, 9);

when have condition this

if (in_array('@', $number) === true) {     echo "true";  }else "false";

and output:

true

and question why symbols same whit number in array $number?? want symbols symbols not number.

example want this

if (in_array('@', $number) === true) {     echo "true";  }else "false";

output : 

false

from documentation in_array():

if third parameter strict set true in_array() function check types of needle in haystack.

in php, casting string doesn't begin number evaluates to 0. 0 exists in array, in_array() returns true. if don't want happen, set third parameter in_array() true, performs strong comparison (equivalent ===) , consider types, too.

if (in_array('@', $number, true) === true) {     echo "true"; } else {      echo "false"; }

output:

false

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