How to remove the last character in PHP?

You can use the substr function to remove the last character. The substr function can be used to extract a part of a string.

Here is an example:

$str = "Hello World!";
$newStr = substr($str, 0, -1);
echo $newStr; // 输出：Hello World

In the example above, the first parameter of the substr function is the string to be sliced, the second parameter is the starting position, and the third parameter is the length. By setting the third parameter as a negative number, you can calculate the length from the end of the string.

Setting the third parameter to -1 here means that we are starting from the end and removing the last character when truncating. Lastly, assign the truncated string to the variable $newStr and output $newStr.