Web Reference: The function parameters are declared in the function signature. Information may be passed to functions via the argument list, which is a comma-delimited list of expressions. In this section, you will gain a basic understanding of PHP functions and their role in programming. This foundation will prepare you to fully understand PHP Function parameters and return values in the upcoming sections and apply them effectively in your PHP projects. Information can be passed to functions through parameters. A parameter is just like a variable. Parameters are specified after the function name, inside the parentheses. You can add as many parameters as you want, just separate them with a comma. The following example has a function with one parameter ($fname).
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