How php replaces a line of content

This article mainly explains "how to replace a line of content by php". Friends who are interested may wish to have a look at it. The method introduced in this paper is simple, fast and practical. Now let the editor take you to learn "how to replace a line of content by php"!

Operating environment of this article: Windows7 system, PHP7.1 version, Dell G3 computer

How does php replace a line?

Php replaces the contents of the specified line in the file

First kind

Use the file function to read the file, and each line is an array element

$arr = file ($file); $arr [$line] = "hello"; file_put_contents ($file, implode (", $arr))

The second kind

$fp = new\ SplFileObject ('. / test.php', 'ringing'); / / go to the second line. The seek method parameters are counted from 0, and the pointer points to the end of the line after my test, so the third line $fp- > seek (1) is modified; / / the current line content (second line) $line = $fp- > current (); $fp- > write ("hello")

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