What are the potential pitfalls of combining two PHP scripts together?

When combining two PHP scripts together, potential pitfalls may arise due to variable naming conflicts, duplicate function declarations, or incompatible code structures. To avoid these issues, it is essential to carefully review both scripts and make any necessary modifications to ensure seamless integration. 

// Example of combining two PHP scripts with potential pitfalls
// Ensure variable names are unique and functions are not duplicated

// Script 1
$var1 = "Hello";

function greet() {
    echo "Greetings!";
}

// Script 2
$var1 = "Hi";

function farewell() {
    echo "Goodbye!";
}

// Combined script
$var1 = "Hello";
$var2 = "Hi";

function greet() {
    echo "Greetings!";
}

function farewell() {
    echo "Goodbye!";
}

Keywords

PHP scripts compatibility namespace variable scope

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