What is Constant in PHP. A constant is a name or an identifier for a fixed value. Constant are like variables, except that once they are defined, they cannot be undefined or changed (except magic constants). Constants are very useful for storing data that doesn't change while the script is running.
Constants - PHP Tutorial
What is Constant in PHP. A constant is a name or an identifier for a fixed value. Constant are like variables, except that once they are defined, they cannot be undefined or changed (except magic constants). Constants are very useful for storing data that doesn't change while the script is running.
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