What steps can be taken to troubleshoot parameter passing issues in PHP?

Parameter passing issues in PHP can often be resolved by checking the data types of the parameters being passed to a function or method. Make sure that the number of parameters being passed matches the function's signature, and that the parameters are in the correct order. Additionally, ensure that the variable names used in the function call match the variable names in the function definition. 

// Incorrect parameter passing
function greet($name) {
    echo "Hello, $name!";
}

$name = "Alice";
greet(); // Missing parameter causing an error

// Correct parameter passing
function greet($name) {
    echo "Hello, $name!";
}

$name = "Alice";
greet($name); // Correctly passing the parameter

Keywords

PHP parameter passing troubleshooting debugging function arguments

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