PHP fgets() function

Author：Eve Cole Update Time：2025-01-05 14:00:02

Definition and usage

The fgets() function returns a line from an open file.

The fgets() function will stop returning a new line when it reaches the specified length (length - 1), encounters a newline character, or reaches the end of file (EOF), whichever comes first.

This function returns FALSE on failure.

grammar

 fgets(file,length)

parameter	describe
file	Required. Specifies the file to be read.
length	Optional. Specifies the number of bytes to read. The default is 1024 bytes.

Example 1

<?php $file = fopen ( " test.txt " , " r " ) ; echo fgets ( $file ) ; fclose ( $file ) ; ?>

The above code will output:

 Hello, this is a test file.

Example 2: Read a file line by line

<?php $file = fopen ( " test.txt " , " r " ) ; while ( ! feof ( $file ) ) { echo fgets ( $file ) . " <br /> " ; } fclose ( $file ) ; ?>

The above code will output:

 Hello, this is a test file. There are three lines here. This is the last line.