what is constant how can you declare a, PHP Fundamentals, PHP

Question:What is constant? How can you declare a constant?

Answer A constant is a value that cannot be modified throughout the execution of a program. Constant are declare by using the define() function.Its prototype follows:

boolean define(string name, mixed value)Example
define("PI",3.14159);
echo PI; //returns 3.14159

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What is constant? How can you declare a constant?

Question:What is constant? How can you declare a constant?

Answer A constant is a value that cannot be modified throughout the execution of a program. Constant are declare by using the define() function.Its prototype follows: boolean define(string name, mixed value)Example define("PI",3.14159); echo PI; //returns 3.14159