Can't php fopen() create a file?

In PHP, fopen() cannot create a file. This function is used to open a file or URL. If the opening is successful, the file pointer resource is returned; if the opening fails, FALSE is returned with an error message, but no new file is created.

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

You can use the fopen() function to open in PHP A file or URL.

If the opening is successful, the file pointer resource is returned; if the opening fails, FALSE is returned with an error message. You can hide error output by adding an '@' in front of the function name.

The syntax format of the fopen() function is as follows:

fopen(filename,mode,include_path,context)

Parameters	Description
filename	Required. Specifies the file or URL to open.
mode	Required. Specifies the type of access you are requesting to this file/stream.
include_path	Optional. Set this parameter to '1' if you also want to search for files in include_path (in php.ini).
context	Optional. Specifies the environment for a file handle. context is a set of options that can modify the behavior of the stream.

Possible values ​​for mode parameter:

##modeDescriptionrOpen in read-only mode and point the file pointer to the file header. r Open in read-write mode and point the file pointer to the file header. wOpen for writing, point the file pointer to the file header and truncate the file size to zero. Create the file if it does not exist. w Open in read-write mode, point the file pointer to the file header and truncate the file size to zero. Create the file if it does not exist. aOpen for writing, pointing the file pointer to the end of the file. Create the file if it does not exist. a Open in read-write mode and point the file pointer to the end of the file. Create the file if it does not exist. xCreate and open for writing, pointing the file pointer to the file header. If the file already exists, the fopen() call fails and returns FALSE and generates an E_WARNING level error message. Create the file if it does not exist. Applies to local files only. x Create and open in read-write mode, other behaviors are the same as x. c Only opens the file for writing, or creates the file if it does not exist. If the file exists, the file contents are not cleared and the file pointer is pointed to the file header. c Open the file for reading and writing, and create the file if it does not exist. If the file exists, the file contents are not cleared and the file pointer is pointed to the file header. [Example] Use the fopen() function to open the file.

<?php
    $handle = fopen("./error/400.html", "r");
    var_dump($handle);echo &#39;<br>&#39;;
    $handle = fopen("D:/install/phpstudy/WWW/index.html", "wb");
    var_dump($handle);echo &#39;<br>&#39;;
    $handle = fopen("http://c.biancheng.net/", "r");
    var_dump($handle);
?>

The running results are as follows:

resource(3) of type (stream)
resource(4) of type (stream)
resource(5) of type (stream)

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