How to close a file in php

In PHP, you can use the fclose() function to close a file. This function can close an open file pointer with the syntax "fclose($handle)"; if the closing is successful, TRUE will be returned. Returns FALSE on failure.

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

The resource type is one of the basic types of PHP. Once you have finished processing the resource, be sure to close it, otherwise some unexpected errors may occur.

The function fclose() can close an open file pointer, returning TRUE if successful and FALSE if failed. The syntax format of the function is as follows:

fclose(resource $handle)

where $handle is the file pointer to be closed. This pointer must be valid and successfully opened through the fopen() or fsockopen() function.

[Example] Use fclose() to close the file pointer.

<?php
    $handle = fopen("test.txt", "r");
    echo &#39;文件指针关闭之前：&#39;;
    var_dump($handle);
    fclose($handle);
    echo &#39;<br>文件指针关闭之后：&#39;;
    var_dump($handle);
?>

The running results are as follows:

文件指针关闭之前：resource(3) of type (stream)
文件指针关闭之后：resource(3) of type (Unknown)

Recommended learning: "PHP Video Tutorial"

The above is the detailed content of How to close a file in php. For more information, please follow other related articles on the PHP Chinese website!