October 3

File handling in PHP

Kindly find the below, different  modes of files operations:

Modes

Description

r

Read only. Starts at the beginning of the file

r+

Read/Write. Starts at the beginning of the file

w

Write only. Opens and clears the contents of file; or creates a new file if it doesn’t exist

w+

Read/Write. Opens and clears the contents of file; or creates a new file if it doesn’t exist

a

Append. Opens and writes to the end of the file or creates a new file if it doesn’t exist

a+

Read/Append. Preserves file content by writing to the end of the file

x

Write only. Creates a new file. Returns FALSE and an error if file already exists

x+

Read/Write. Creates a new file. Returns FALSE and an error if file already exists

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