What are the potential pitfalls of using single quotes versus double quotes in PHP scripts?

Using single quotes versus double quotes in PHP scripts can lead to potential issues with variable interpolation. Double quotes allow for variable interpolation, meaning that variables within the string will be evaluated and replaced with their values. Single quotes do not allow for variable interpolation, meaning that variables within the string will be treated as literal characters. To avoid any confusion or errors, it is recommended to use double quotes when working with strings that contain variables. 

$name = 'Alice';
// Using double quotes for variable interpolation
echo "Hello, $name!";

Keywords

single quotes double quotes string interpolation variable parsing escaping characters

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