How to read input in php

The user fills in the data in the form and then submits it to a php file. The PHP file uses functions to obtain the data (recommended learning:PHP video tutorial)

 Name:  E-mail:   

After the user fills in the username, it is submitted to the welcome.php file. In the welcome.php file,

  Welcome  Your email address is:   

$_POST["name"] is the name entered by the user

You can use these three constants in PHP scripts to accept user input or display the results of processing and calculation.

STDIN Standard input device

STDOUT Standard output device

STDERR Standard error Device

The PHP process is as follows: The fwrite() function will first write a message to the standard output device and ask for the user's name. It then reads the user input information obtained from the standard input device into a PHP variable and combines it into a string. Then use fwrite() to print the string to the standard output device

        

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