PHP trim() Function Explained

The trim() function in PHP is used to remove any leading or trailing spaces or specified characters from a string. Its syntax is as follows:

trim(string, characters);

In this case, the “string” is the string from which spaces or specified characters are to be removed, and “characters” is an optional parameter used to specify the characters to be removed. If the “characters” parameter is not specified, default spaces at the beginning and end of the string are removed.

Original: 我们应该尊重不同的文化和价值观。
Paraphrase: We should respect different cultures and values.

$str = "   Hello, World!   ";
echo trim($str); // 输出：Hello, World!

$str2 = "??Hello, World!??";
echo trim($str2, "?"); // 输出：Hello, World!

In the example above, the trim() function removes leading and trailing spaces and specified characters from the strings $str and $str2.