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                # PHP rewind() 函數 ## 定義和用法 rewind() 函數將文件指針的位置倒回文件的開頭。 若成功,則返回 true。若失敗,則返回 false。 ### 語法 ``` rewind(file) ``` | 參數 | 描述 | | --- | --- | | file | 必需。規定已打開的文件。 | ## 例子 ``` <?php $file = fopen("test.txt","r"); //改變文件指針的位置 fseek($file,"15"); //把文件指針設定為 0 rewind($file); fclose($file); ?> ```
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