How does the order of variable declaration and usage impact PHP code execution?

The order of variable declaration and usage in PHP can impact code execution when a variable is used before it has been declared. This can lead to errors or unexpected behavior in the code. To solve this issue, always ensure that variables are declared before they are used in the code. 

// Correct way to declare and use variables
$variable = "Hello";
echo $variable;

Keywords

variable declaration variable usage PHP code execution scope data type

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