What does fgets mean in php

In PHP, fgets means "reading a line of data from a file"; the fgets() function can read one line of data at a time from an open file and return data of a specified length. The syntax "fgets( $handle,$length)".

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

PHP fgets is a programming language developed based on PHP language A function that can read a row of data from a file pointer and return the data.

fgets() function is used to read one line of data at a time from an open file. The syntax format of this function is as follows:

fgets($handle,$length)

The parameter $handle is to be opened file; parameter $length is an optional parameter, used to set the length of data to be read. The

function can read a line from the specified file $handle and return a string with a maximum length of $length-1 bytes. Stops after encountering a newline character, EOF, or reading $length-1 bytes. If the $length parameter is omitted, the default read length is 1k (1024 bytes).

Example:

Use the fgets() function to read a line of data from the "test.txt" file

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

Then the loop statement can also read all the data line by line:

<?php
$handle = fopen("test.txt","r");
if ($handle) {
        while (($info = fgets($handle, 1024)) !== false) {
            echo $info.&#39;<br>&#39;;
        }
        fclose($handle);
    }  
?>

Recommended learning: "PHP Video Tutorial"

The above is the detailed content of What does fgets mean in php. For more information, please follow other related articles on the PHP Chinese website!