code-boxx/0-JS-JSON-PHP.MD

## 0-JS-JSON-PHP.MD

      
    Raw
  

              0-JS-JSON-PHP.MD
            
          
    JAVASCRIPT SEND JSON DATA TO PHP

https://code-boxx.com/javascript-send-json-php/
LICENSE

Copyright by Code Boxx
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

  
## 1-json-post.html
<!DOCTYPE html>
<html>
  <head>
    <title>JSON TO PHP</title>
    <meta charset="utf-8">
  </head>
  <body>
    <!-- (A) HTML FORM -->
    <form id="demoA" onsubmit="return demoA()">
      <input type="text" name="name" required value="Job Doe">
      <input type="email" name="email" required value="job@doe.com">
      <input type="submit" value="Go">
    </form>

    <!-- (B) JAVASCRIPT -->
    <script>
    function demoA () {
      // (B1) GET FORM DATA, CONVERT TO JSON
      var form = new FormData(document.getElementById("demoA")),
          data = JSON.stringify(Object.fromEntries(form.entries()));
      console.log(data); // this is a string!

      // (B2) DATA TO SEND TO PHP
      var send = new FormData();
      send.append("data", data);

      // (B3) SEND VIA POST
      fetch("x-dummy.php", { method:"post", body:send })
      .then(res => res.text())
      .then(txt => {
        console.log(txt); // server response
        // do your stuff after server response
      })
      .catch(err => console.error(err));

      // (B4) PREVENT FORM SUBMIT
      return false;
    }
    </script>
  </body>
</html>

## 2-json-get.html
<!DOCTYPE html>
<html>
  <head>
    <title>JSON TO PHP</title>
    <meta charset="utf-8">
  </head>
  <body>
    <!-- (A) HTML FORM -->
    <form id="demoB" onsubmit="return demoB()">
      <input type="text" name="name" required value="Joe Doe">
      <input type="email" name="email" required value="joe@doe.com">
      <input type="submit" value="Go">
    </form>

    <!-- (B) JAVASCRIPT -->
    <script>
    function demoB () {
      // (B1) GET FORM DATA, CONVERT TO JSON
      var form = new FormData(document.getElementById("demoB")),
          data = JSON.stringify(Object.fromEntries(form.entries()));
      console.log(data); // this is a string!

      // (B2) DATA TO SEND TO PHP
      var send = new URLSearchParams();
      send.append("data", data);

      // (B3) SEND VIA GET
      fetch("x-dummy.php?" + send.toString())
      .then(res => res.text())
      .then(txt => {
        console.log(txt); // server response
        // do your stuff after server response
      })
      .catch(err => console.error(err));

      // (B4) PREVENT FORM SUBMIT
      return false;
    }
    </script>
  </body>
</html>

## 3-json-no-form.html
<!DOCTYPE html>
<html>
  <head>
    <title>JSON TO PHP</title>
  </head>
  <body>
    <!-- (A) TEST BUTTON -->
    <input type="button" value="Go" onclick="demoC()">

    <!-- (B) JAVASCRIPT -->
    <script>
    function demoC () {
      // (B1) JSON ENCODE DATA TO SEND
      var data = JSON.stringify({
        name : "Joy Doe",
        email : "joy@doe.com"
      });

      // (B2) FORM DATA
      var send = new FormData();
      send.append("data", data);

      // (B3) SEND DATA TO PHP VIA POST
      fetch("x-dummy.php", { method:"post", body:send })
      .then(res => res.text())
      .then(txt => {
        console.log(txt); // server response
        // do your stuff after server response
      })
      .catch(err => console.error(err));
    }
    </script>
  </body>
</html>

## x-dummy.php
<?php
// (A) ECHO POST & GET DATA
print_r($_POST);
print_r($_GET);

// (B) JSON DECODE TO GET ARRAY
// $data = json_decode($_POST["data"], true);
// $data = json_decode($_GET["data"], true);
// print_r($data);
	<!DOCTYPE html>
	<html>
	<head>
	<title>JSON TO PHP</title>
	<meta charset="utf-8">
	</head>
	<body>
	<!-- (A) HTML FORM -->
	<form id="demoA" onsubmit="return demoA()">
	<input type="text" name="name" required value="Job Doe">
	<input type="email" name="email" required value="job@doe.com">
	<input type="submit" value="Go">
	</form>

	<!-- (B) JAVASCRIPT -->
	<script>
	function demoA () {
	// (B1) GET FORM DATA, CONVERT TO JSON
	var form = new FormData(document.getElementById("demoA")),
	data = JSON.stringify(Object.fromEntries(form.entries()));
	console.log(data); // this is a string!

	// (B2) DATA TO SEND TO PHP
	var send = new FormData();
	send.append("data", data);

	// (B3) SEND VIA POST
	fetch("x-dummy.php", { method:"post", body:send })
	.then(res => res.text())
	.then(txt => {
	console.log(txt); // server response
	// do your stuff after server response
	})
	.catch(err => console.error(err));

	// (B4) PREVENT FORM SUBMIT
	return false;
	}
	</script>
	</body>
	</html>
	<?php
	// (A) ECHO POST & GET DATA
	print_r($_POST);
	print_r($_GET);

	// (B) JSON DECODE TO GET ARRAY
	// $data = json_decode($_POST["data"], true);
	// $data = json_decode($_GET["data"], true);
	// print_r($data);