How can uninitialized variables or variable name confusion affect the functionality of if statements in PHP?

Uninitialized variables or variable name confusion can affect the functionality of if statements in PHP by causing unexpected behavior or errors. To solve this issue, always make sure to initialize variables before using them in if statements and ensure that variable names are consistent throughout the code. 

// Initializing variables before using them in if statements
$age = 25;

if ($age >= 18) {
    echo "You are an adult.";
}

Keywords

uninitialized variables variable name confusion if statements PHP functionality

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