What are the implications of using double-quoted strings in PHP when handling code?

Using double-quoted strings in PHP can lead to potential issues with variable interpolation, as PHP will attempt to evaluate any variables within the string. To avoid this, it is recommended to use single-quoted strings when dealing with code that does not require variable interpolation. 

// Example of using single-quoted strings to avoid variable interpolation
$name = 'John';
echo 'Hello, ' . $name . '!'; // Output: Hello, John!

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double-quoted strings PHP code handling implications error types

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