PHP substr_replace() function syntax
substr_replace(string,replacement,start,length)
| Parameters |
Description |
| string |
Required. Specifies the string to check. |
| replacement |
Required. Specifies the string to be inserted. |
| start |
| 参数 |
描述 |
| string |
必需。规定要检查的字符串。 |
| replacement |
必需。规定要插入的字符串。 |
| start |
必需。规定在字符串的何处开始替换。
- 正数 - 在第 start 个偏移量开始替换
- 负数 - 在从字符串结尾的第 start 个偏移量开始替换
- 0 - 在字符串中的第一个字符处开始替换
|
| charlist |
可选。规定要替换多少个字符。
- 正数 - 被替换的字符串长度
- 负数 - 从字符串末端开始的被替换字符数
- 0 - 插入而非替换
|
Required. Specifies where in the string to begin replacement.
- Positive number - start replacement at start offset
- Negative number - replace at start offset from the end of the string
- 0 - Start replacement at the first character in the string
|
| charlist |
Optional. Specifies how many characters to replace.
- Positive number - the length of the string to be replaced
- Negative number - the number of characters to be replaced starting from the end of the string
- 0 - insert instead of replace
|
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PHP substr_replace() Function syntax substr_replace(string,replacement,start,length) Parameter description string required. Specifies the string to check. replacement required. Specifies what to insert...
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