How can escaping characters, such as quotes and backslashes, be properly handled in PHP when using functions like exec()?

When using functions like exec() in PHP, special characters like quotes and backslashes need to be properly escaped to prevent injection attacks or unexpected behavior. One way to handle this is by using the escapeshellarg() function to properly escape the arguments passed to the exec() function. 

$arg = "some argument with 'quotes' and backslashes \\";
$escaped_arg = escapeshellarg($arg);
exec("some_command ".$escaped_arg);

Keywords

escaping characters quotes backslashes exec() PHP

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