Php/docs/splfileobject.rewind

• PHP Manual
• SplFileObject
• Rewind the file to the first line

SplFileObject::rewind

(PHP 5 >= 5.1.0, PHP 7)

SplFileObject::rewind — Rewind the file to the first line

说明

public SplFileObject::rewind ( ) : void

Rewinds the file back to the first line.

参数

此函数没有参数。

返回值

没有返回值。

错误／异常

Throws a RuntimeException if cannot be rewound.

范例

Example #1 SplFileObject::rewind() example

<?php$file = new SplFileObject("misc.txt");// Loop over whole fileforeach ($file as $line) { }// Rewind to first line$file->rewind();// Output first lineecho $file->current();?>

参见

• SplFileObject::current() - Retrieve current line of file
• SplFileObject::key() - Get line number
• SplFileObject::seek() - Seek to specified line
• SplFileObject::next() - Read next line
• SplFileObject::valid() - Not at EOF