| 1. | Expression containing substrings and delimiters 表达式,包含子字符串和分隔符。 |
| 2. | Integer that specifies where the substring starts 指定子字符串开始位置的整数。 |
| 3. | The substr ( ) function returns a part of a string 函数的作用是:返回子字符串。 |
| 4. | Gets the number of substrings captured by the group 获取由该组捕获的子字符串数。 |
| 5. | The actual substring that was captured by the match 通过匹配捕获的实际子字符串。 |
| 6. | Integer that specifies the length of the substring 指定子字符串长度的整数。 |
| 7. | Substitutes the last substring matched by a > )组匹配的最后一个子字符串。 |
| 8. | It does not reverse the substring that is searched for 它不会反转所搜索的子字符串。 |
| 9. | Gets the captured substring from the input string 从输入字符串中获取捕获的子字符串。 |
| 10. | Returns a substring of the formatted string 返回带格式字符串的子字符串。 |