What are the best practices for optimizing PHP code for speed and efficiency when it comes to using single quotes or double quotes?

When optimizing PHP code for speed and efficiency, it is generally recommended to use single quotes instead of double quotes for string literals whenever possible. This is because PHP does not have to parse variables within single quotes, leading to faster execution. However, if variables need to be included within the string, it is more efficient to use double quotes in that specific case. 

// Using single quotes for string literals
$myString = 'This is a static string';

// Using double quotes for string with variables
$myVar = 'world';
$myString = "Hello, $myVar!";

Keywords

PHP optimization speed efficiency quotes

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