In what situations can the choice between single quotes and double quotes affect the performance of PHP scripts noticeably?

Using double quotes in PHP allows for variable interpolation, which means that variables within the string will be evaluated and replaced with their values. This can lead to a slight decrease in performance compared to using single quotes, where variables are not interpolated. In situations where performance is critical and variable interpolation is not needed, using single quotes can help optimize the script. 

// Using single quotes for strings where variable interpolation is not needed
$name = 'John';
echo 'Hello, ' . $name . '!'; // Output: Hello, John!

Keywords

single quotes double quotes performance PHP scripts string interpolation

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