How to delete the last two characters of a string in PHP

PHP method of deleting the two characters at the end of a string

In PHP, deleting the two characters at the end of a string can be achieved through a variety of methods. Here are some commonly used methods, along with specific code examples.

Method one: use substr function

$str = "Hello World!";
$trimmedStr = substr($str, 0, -2);
echo $trimmedStr; // 输出：Hello World

Method two: use mb_substr function (for multi-byte characters)

$str = "你好，世界！";
$trimmedStr = mb_substr($str, 0, mb_strlen($str) - 2);
echo $trimmedStr; // 输出：你好，世界

Method three: use substr_replace function

$str = "12345";
$trimmedStr = substr_replace($str, '', -2);
echo $trimmedStr; // 输出：123

Method 4: Use the rtrim function

$str = "abcdefg";
$trimmedStr = rtrim($str, substr($str, -2));
echo $trimmedStr; // 输出：abcde

The above are several commonly used PHP methods to delete the last two characters of a string. Choose the appropriate method to implement string processing according to the specific situation. Hope it helps.

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