File I/O and the File System
This chapter introduces a particularly important aspect of PHP: file I/O (input/output). As you can imagine, data input and output flows are put to considerable use in the developing of Web applications. Not limited to simple reading and writing of files, PHP provides support for viewing and modifying server information, in addition to executing third-party programs. These features are the subject of this chapter.
KeywordsFile System User Datagram Protocol Parent Directory Standard Output Directory Stream
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