What function can be used in PHP to separate a string into two variables based on a delimiter?
To separate a string into two variables based on a delimiter in PHP, you can use the `explode()` function. This function takes the delimiter as the first argument and the string to be split as the second argument, and returns an array of substrings. You can then assign these substrings to separate variables.
$string = "Hello,World";
$delimiter = ",";
list($first, $second) = explode($delimiter, $string);
echo $first; // Output: Hello
echo $second; // Output: World