How can escaping characters be used to ensure proper execution of PHP code stored in variables?

When storing PHP code in variables, special characters such as double quotes or backslashes can interfere with the execution of the code. To ensure proper execution, these characters need to be escaped using backslashes. This prevents PHP from interpreting them as part of the code itself and instead treats them as literal characters within the string. 

$code = '<?php echo "Hello, World!"; ?>';
$escaped_code = addslashes($code);

eval($escaped_code);

Keywords

escaping characters PHP code variables proper execution security

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