What is the recommended method in PHP to truncate a string from the left up to a specific character, such as an underscore?

To truncate a string from the left up to a specific character, such as an underscore, in PHP, you can use the `strstr()` function to find the position of the underscore and then use `substr()` to extract the substring up to that position. This method allows you to truncate the string from the left up to the desired character.

$string = "example_string";
$position = strpos($string, "_");
$truncated_string = substr($string, 0, $position);
echo $truncated_string;