is_real() function in PHP 7 checks whether a variable is a float or a double. It is a deprecated alias for the
is_float() function, which performs the same check.
The syntax of the
is_real() function is as follows:
bool is_real(mixed $var)
The function takes a single parameter,
$var, which is the variable to be checked for being a float or a double. The function returns true if the variable is a float or a double, and false otherwise.
Here is an example of how to use the
is_real() function in PHP:
$var1 = 3.14; $var2 = 2.0; $var3 = "hello"; echo is_real($var1) . "<br>"; // output: 1 (true) echo is_real($var2) . "<br>"; // output: 1 (true) echo is_real($var3) . "<br>"; // output: (false)
In this example, we define three variables:
$var2 are both floats, and
$var3 is a string. We then use the
is_real() function to check whether each variable is a float or a double. The output shows that
$var2 are floats or doubles (true), while
$var3 is not a float or a double (false).
is_real() function is an alias for
is_float() in PHP 7, and it is deprecated. It is recommended to use
is_float() instead, as it is more descriptive and less likely to be removed in future PHP versions.