How does the placement of braces in if-else statements impact the execution flow and logic in PHP code?

Placing braces in if-else statements impacts the execution flow and logic in PHP code by defining the scope of each block of code. If braces are not used, only the next line of code after the if or else statement is considered part of the block. This can lead to unintended behavior or logic errors. To ensure clarity and avoid issues, always use braces to enclose the code blocks within if-else statements.

// Incorrect placement of braces
if ($condition)
    echo "Condition is true";
    echo "This line always executes";

// Correct placement of braces
if ($condition) {
    echo "Condition is true";
}
echo "This line executes based on the condition";