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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                # Coroutine::fgets 協程方式按行讀取文件內容。 ```php function Coroutine::fgets(resource $handle); ``` `Co::fgets`底層使用了`php_stream`緩存區,默認大小為`8192`字節,可使用`stream_set_chunk_size`設置緩存區尺寸。 > 需要`2.1.1`或更高版本 > `fgets`函數僅可用于文件類型的`stream`資源 參數 ---- * `$handle`文件句柄,必須是`fopen`打開的文件類型`stream`資源 返回值 ---- * 讀取到`EOL`(`\r`或`\n`)將返回一行數據,包括`EOL` * 未讀取到`EOL`,但內容長度超過`php_stream`緩存區`8192`字節,將返回`8192`字節的數據,不包含`EOL` * 達到文件末尾`EOF`時,返回空字符串,可用`feof`判斷文件是否已讀完 * 讀取失敗返回`false`,使用`swoole_last_error`函數獲取錯誤碼 示例 --- ```php $fp = fopen(__DIR__ . "/defer_client.php", "r"); go(function () use ($fp) { $r = co::fgets($fp); var_dump($r); }); ```
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