Home > Article > Backend Development > How do PHP functions return constants?
PHP functions use the return statement to return constants, which are named values that cannot be changed. Syntax: return constant_name; 1. Define a constant; 2. Create a function that returns the constant; 3. Use the return keyword followed by the constant name to return the constant.
#How do PHP functions return constants?
In PHP, you can return constants through the return
statement. Constants are named values whose values cannot be changed during script execution. To return a constant, you simply use the return
keyword followed by the name of the constant.
Grammar:
return constant_name;
Practical case:
Suppose we have a named MY_CONSTANT
Constant, which is defined as the string "Hello World". We can create a function that returns the constant:
<?php define('MY_CONSTANT', 'Hello World'); function getConstant() { return MY_CONSTANT; } echo getConstant(); // 输出 "Hello World" ?>
Please note:
The above is the detailed content of How do PHP functions return constants?. For more information, please follow other related articles on the PHP Chinese website!