The is_real() function is an inbuilt function in PHP which is used to check the given value is a real number or not.
Syntax:
bool is_real( mixed $var )
Parameters: This function accepts one parameter as mentioned above and described below:
- $var: It contains the value of variable that need to be check.
Return Value: It returns TRUE if the given value of variable is real number, FALSE otherwise.
Program 1:
<?php // PHP code to demonstrate // the is_real() function   function square($num) {     return (is_real($num)); }   var_dump(square(9.09)); var_dump(square(FALSE)); var_dump(square(14)); var_dump(square(56.30));   ?> |
Output:
bool(true) bool(false) bool(false) bool(true)
Program 2:
<?php // PHP program to demonstrate the // is_real() function   $variable_name1 = 67.099; $variable_name2 = 32; $variable_name3 = "abc"; $variable_name4 = FALSE;   // Check given variable is real number or not if (is_real($variable_name1))     echo "$variable_name1 is a real value. \n"; else    echo "$variable_name1 is not a real value. \n";   // Check given variable is real number or not if (is_float($variable_name2))     echo "$variable_name2 is a real value. \n"; else    echo "$variable_name2 is not a real value. \n";   // Check given variable is real number or not if (is_float($variable_name3))     echo "$variable_name3 is a real value. \n"; else    echo "$variable_name3 is not a real value. \n";   // Check given variable is real number or not if (is_float($variable_name4))     echo "FALSE is a real value. \n"; else    echo "FALSE is not a real value. \n"; ?> |
Output:
67.099 is a real value. 32 is not a real value. abc is not a real value. FALSE is not a real value.
Reference: https://www.php.net/manual/en/function.is-real.php
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