PHP Learning note--8. Files and directories

1. File Handling functions

File_get_contents ()//Get the contents of a File/network resource

Faster functions with internal encapsulation of open/close operations

But because in fact, the contents of the file read all, for large files with caution

File_put_contents (' file ', content)//write content to file

If the file does not exist, it is created automatically

fopen (' file ', ' mode ')//Open a file, return a resource

R Read-only

r+ read-write, pointer overwrite write from file header

W Write, will clear first

A append mode, pointer in the last

Fread (resource, length)//Read the contents of a resource

Fwrite (resources, content)//write content to

Fclose (resources)//Close Resources

Fgets (Resource)//read a line of content, read the pointer down one line

Feof ()//Determine if the pointer is in the last row

File (Resource)//reads the contents of the files and splits them into arrays by rows, returning the data

Use caution for large files

Filemtime ()//File modification time

FileSize ()//Read File size

Unlink ()//delete files

2. Import the CSV file

When you need to enter the contents of the XLS file into the database, you can save it as a CSV file first

Fgetcsv () takes a row from the file pointer

The relevant specifications for the CSV file have been encapsulated, even though the CSV file has some

Special cases (such as blank lines, commas between fields, etc.), can also operate normally

3. Directory Operations

Opendir ()//Open Readdir ()//Read closedir ()//Off

Is_dir ()//whether directory mkdir ()//Create RMDIR ()//delete (only non-empty)

mkdir (' directory ', 0777,true); Turn on recursive creation

@zhnoah
Source: http://www.cnblogs.com/zhnoah/
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PHP Learning note--8. Files and directories