How can special characters like " and \ be properly handled when using the eval() function in PHP?

Special characters like " and \ can cause issues when using the eval() function in PHP because they can lead to syntax errors or unexpected behavior. To properly handle these special characters, you can use the addslashes() function to escape them before passing the string to eval(). This will ensure that the special characters are treated as literal characters within the evaluated code. 

$code = 'echo "Hello, world!";';
$code = addslashes($code);
eval($code);

Keywords

eval special characters escape PHP handling

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