如何使用表单输入将文本插入.txt文件？

Question

I want a page where I can enter text into an input form, and then have that text inserted into a text file into the appropriate places.

For example, the input form will have 2 input form fields: 1. how many pizzas? 2. which city?

It will update a text file that says:

There are (1) pizzas in (2) .

There are 5 pizzas in New York

Very simple, but how do I do this?

Answer 1

PHP:

<?php
file_put_contents('file.txt', 'There are ' . $_POST['pizzas'] . ' pizzas in ' . $_POST['city']);
?>

HTML:

<form action="script.php" method="POST">
  Pizzas: <input type="text" name="pizzas"><br />
  City: <input type="text" name="city"><br />
  <input type="submit" value="Save">
</form>

Answer 2

Use JSON. It will let you edit the data easily (and because it's cool).

if ( empty( $_POST['pizzaCount'] ) === false && empty( $_POST['city'] ) === false )
{
   $savePath = 'folder/folder2/save.txt';
   $content = array();

   //does the file already exist?
   if ( ( $fileContents = file_get_contents( $savePath ) ) !== false )
   {
      //get the old data
      $content = json_decode( $fileContents , true );
   }
   //add the new data
   $content[] = array( 'pizzaCount' => $_POST['pizzaCount'] , 'city' => $_POST['city'] );

   //decode the new data
   $content = json_encode( $content );
   file_put_contents( $savePath , $content );

}