PHP method to open a file in read-only mode, _PHP tutorial

How to open a file in read-only mode in php,

The example in this article describes how to open a file in read-only mode in php. Share it with everyone for your reference. The specific analysis is as follows:

In PHP, you can open a file through fopen(). The second parameter is set to "r" to indicate that it has been opened in read-only mode. The function returns a file handle, and other functions can use this file handle to process the file in different ways. Read

<&#63;php 
$file = fopen("/tmp/file.txt", "r");
print("Type of file handle: " . gettype($file) . "\n");
print("The first line from the file handle: " . fgets($file));
fclose($file); 
&#63;>

The above code returns the following results

Type of file handle: resource
The first line from the file handle: Welcome to sharejs.com php tutorials

After the file reading is completed, you need to use the fclose() function to close the file handle to release resources

I hope this article will be helpful to everyone’s PHP programming design.