What happens if not all parameters are passed when calling a PHP function?

If not all parameters are passed when calling a PHP function, PHP will throw an error. To solve this issue, you can set default values for the parameters in the function definition. This way, if a parameter is not passed, the default value will be used instead. 

function myFunction($param1, $param2 = 'default_value') {
    // Function code here
}

// Calling the function with only one parameter
myFunction('value1');

Keywords

PHP function parameters error missing

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