SplFileObject::next()

(PHP 5 >= 5.1.0, PHP 7)

Read next line

说明

Moves ahead to the next line in the file.

参数

此函数没有参数。

返回值

没有返回值。

范例

SplFileObject::next() example

参见

• SplFileObject::current() Retrieve current line of file
• SplFileObject::key() Get line number
• SplFileObject::seek() Seek to specified line
• SplFileObject::rewind() Rewind the file to the first line
• SplFileObject::valid() Not at EOF

Quick note when using next(), it appears that you have to already be at the end of the line in order for it to hop to the next one. I realized this while attempting to do a lineCount implementaiton like the following:

It ended up in an infinite loop. The solution was to just call fgets()/current() in the loop, although it wasn't being used anywhere so the following works: 

As @Jonnycake pointed there is no documentation about the following behavior of next();
You need to call current() to really move forward without the need of a source loop.
Be:


Honestly, I don't know if it is waste of memory and/or CPU .

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