-
- //by bbs.it-home.org
- $rest = substr("abcdef", 1); // returns "bcdef"
- echo 'substr("abcdef", 1) returns ' . $rest . "
";
- $rest = substr("abcdef", 1, 3); // returns "bcd"
- echo 'substr("abcdef", 1, 3) returns ' . $rest . "
";
- $rest = substr("abcdef", -1); // returns "f"
- echo 'substr("abcdef", -1) returns ' . $rest . "
";
- $rest = substr("abcdef", -2); // returns "ef"
- echo 'substr("abcdef", -2) returns ' . $rest . "
";
- $rest = substr("abcdef", -3, 1); // returns "d"
- echo 'substr("abcdef", -3, 1) returns ' . $rest . "
";
- $rest = substr("abcdef", 1, -1); // returns "bcde"
- echo 'substr("abcdef", 1, -1) returns ' . $rest . "
";
- ?>
-
更多内容，请参考php手册中的function.substr.html。
| 
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
