The difference between php $_POST and php://input

1.$_POST and php tutorial: input can get the value, $HTTP_RAW_POST_DATA is empty$_POST organizes the submitted data in an associative array, and encodes it, such as urldecode, and even encoding conversion php: input can also be achieved This function can get the original POST

2. Use curl post to pass json. Our regular $_POST method cannot be accepted. There is a way to accept it, which is to wrap an array around the json data. , you can use file_get_contents("php://input") to receive the post data without including array

3. Simulate a form and take a look:

<form action=" post.php" method="post">
<input type="text" name="user">
<input type="password" name="password">
<input type=" submit">
</form>

post.php

<? echo file_get_contents("php://input");?>

php://input allows reading the raw data of POST . It puts less pressure on memory than $HTTP_RAW_POST_DATA and does not require any special php.ini settings. php://input cannot be used with enctype="multipart/form-data".

php $_POST

$_POST variable is an array whose content is the variable name and value sent by the HTTP POST method.

$_POST variable is used to collect values ​​from the form with method="post". Information sent from a form with the POST method is invisible to anyone (it does not appear in the browser's address bar), and there is no limit on the amount of information sent.

html

<form action="welcome.php" method="post">
Enter your name: <input type="text" name="name" />
Enter your age: &lt ;input type="text" name="age" />
<input type="submit" />
</form>

welcome.php

Welcome <?php echo $_POST[" name"]; ?>.<br />
You are <?php echo $_POST["age"]; ?> years old!

Variables sent via HTTP POST will not be displayed in the URL middle.
Variables have no length limit

The above has introduced the difference between php $_POST and php://input, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.