SplFileObject::ftell()

(PHP 5 >= 5.1.0, PHP 7)

Return current file position

说明

publicSplFileObject::ftell(void): int

Returns the position of the file pointer which represents the current offset in the file stream.

参数

此函数没有参数。

返回值

Returns the position of the file pointer as an integer, or FALSE on error.

范例

SplFileObject::ftell() example

<?php
$file = new SplFileObject("/etc/passwd");
// Read first line
$data = $file->fgets();
// Where are we?
echo $file->ftell();
?>

参见

• ftell()返回文件指针读/写的位置