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  • SplFileObject::fread()

    (PHP 5 >= 5.5.11, PHP 7)

    Read from file

    说明

    publicSplFileObject::fread(int $length): string

    Reads the given number of bytes from the file.

    参数

    $length

    The number of bytes to read.

    返回值

    Returns the string read from the file 或者在失败时返回FALSE.

    范例

    SplFileObject::fread() example

    <?php
    // Get contents of a file into a string
    $filename = "/usr/local/something.txt";
    $file = new SplFileObject($filename, "r");
    $contents = $file->fread($file->getSize());
    ?>
    

    注释

    Note:

    Note that SplFileObject::fread() reads from the current position of the file pointer. Use SplFileObject::ftell() to find the current position of the pointer and SplFileObject::rewind()(or SplFileObject::fseek())to rewind the pointer position.

    参见

    • fread()读取文件(可安全用于二进制文件)