In this article, you will learn how to get the boolean value of variables in PHP. The boolval() function in PHP returns the boolean value of a variable.
what is the syntax of the BOOLVAL() function in php?
boolval(variable);Parameter Description
variable Required. Specify the variable to check. Must be a scalar type
examples of the BOOLVAL() function
Example 1. In this example, we get the boolean value of different variables.
<?php
echo "0: " .(boolval(0) ? 'true' : 'false') . "<br>";
echo "4: " .(boolval(42) ? 'true' : 'false') . "<br>";
echo '"": ' .(boolval("") ? 'true' : 'false') . "<br>";
echo '"Hello": ' .(boolval("Hello") ? 'true' : 'false') . "<br>";
echo '"0": ' .(boolval("0") ? 'true' : 'false') . "<br>";
echo "[3, 5]: " .(boolval([3, 5]) ? 'true' : 'false') . "<br>";
echo "[]: " .(boolval([]) ? 'true' : 'false') . "<br>";
?>
