How does PHP handle variables within single quotes versus double quotes and what impact does it have on code execution?

When using single quotes in PHP, variables are not parsed and remain as plain text. This means that variables within single quotes will not be evaluated or replaced with their values. On the other hand, when using double quotes, variables are parsed and their values are substituted in the string. This can impact code execution by affecting how variables are interpreted and displayed. 

$name = "Alice";
// Using double quotes
echo "Hello, $name"; // Output: Hello, Alice

// Using single quotes
echo 'Hello, $name'; // Output: Hello, $name

Keywords

PHP variables single quotes double quotes code execution

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