What is return true in PHP?
What is return true in PHP?
Sometimes a method/function returns a boolean value to indicate if the operation was succesfull. In the given example it always returns “TRUE”. The calling code can then act upon succesfull completion of the code. if(dance()) echo “succes” else echo “fails”
How can return true or false function in PHP?
The is_bool() function is used to find whether a variable is an a boolean or not. Syntax: boolean is_bool($variable_name) $variable_name:the variable we want to check. return value: It is a boolean function so returns TRUE when $variable_name is a boolean value, otherwise FALSE.
What is return true and return false in PHP?
Use true and false as Boolean Logical Values in PHP The booleans are logical values. They can either be true or false . Both are case sensitive in php and are also simple data types in php. PHP. Copy $true = True; // returns 1 $false = False; // return nothing echo $true.
Is 0 true or false in PHP?
0 is the integer value of zero, and false is the boolean value of, well, false. To make things complicated, in C, for example, null, 0, and false are all represented the exact same way.
How can check true or false condition in PHP?
The is_bool() function checks whether a variable is a boolean or not. This function returns true (1) if the variable is a boolean, otherwise it returns false/nothing.
How do you return a true function?
To check if a function returns true , call the function and check if its return value is equal to true , e.g. if (func() === true) . If the function’s return value is equal to true the condition will be satisfied and the if block will run.
Is return 0 True or false?
That 0 also happens to be considered false is just a coincidence. returning 0 on success makes sense because 0 in this case is used to mean no error and any other number would be an error code.
Does return 0 means true or false?
return 0 in the main function means that the program executed successfully. return 1 in the main function means that the program does not execute successfully and there is some error. return 0 means that the user-defined function is returning false.
Is 0 True or false PHP?