[Solved] What will be the output of this PHP code?function greet($name = "Guest") { return "Hello, " . $name; } echo greet(); | PHP

PHP - Functions

What will be the output of this PHP code?

function greet($name = "Guest") {
  return "Hello, " . $name;
}
echo greet();

AHello,

BHello, Guest

CHello, name

DError: Missing argument

Step-by-Step Solution

Solution:

Step 1: Analyze function call without argument
The function greet has a default parameter value "Guest" for $name. Calling greet() without argument uses this default.
Step 2: Determine output
The function returns "Hello, " concatenated with $name, which is "Guest" here, so output is "Hello, Guest".
Final Answer:
Hello, Guest -> Option B
Quick Check:
Default parameter used when argument missing = Hello, Guest [OK]

Quick Trick: Default parameters fill in missing arguments [OK]

Common Mistakes:

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