Executing a php script located on server via ajax

Question

I have a website hosted on server, now what I want is to run a .php script (Also located on the same server) when someone presses the submit button in the website.

Following is the ajax code

$.ajax({url: "/test.php",
  success: function(response){
      console.log("Success",response);
    }
  });

My test.php consists of

<?php
//exec('sudo -u www-data python /var/www/html/test.py');
echo "PHP Script Ran";
mkdir("/var/www/html/test", 0700);
?>

When I navigate to ip_address/test.php, the echo message is displayed correctly but the mkdir command doesn't seem to be executed as there is no folder created in my server's directory.

Also I want to know, how can I run this test.php script when someone presses the submit button in my website.

The Javascript code is

var $ = jQuery;
var timestamp = Number(new Date());
var form = document.querySelector("form");
var database = firebase.database();
form.addEventListener("submit", function(event) {
  var ary = $(form).serializeArray();
  var obj = {};
  for (var a = 0; a < ary.length; a++) obj[ary[a].name] = ary[a].value;
    console.log("JSON",obj);
  firebase.database().ref('users/' + timestamp).set(obj);
  database.ref('users/' + timestamp).once('value').then(function(snapshot) {
    console.log("Received value",snapshot.val());
    $.ajax({
      url: "/test.php",
      success: function(response){
        console.log("Success",response);
      }
    });
  });
});

Any help on this would be much appreciated. Thanks

event.preventDefault(); is missing to stop the form submission. — Jai
– Jai, Commented Jun 9, 2016 at 8:01
@Jai so I added this after form.addEventListener("submit", function(event) {event.preventDefault(); ..... but how do I execute the php script now? After getting it from ajax — harshithdwivedi
– harshithdwivedi, Commented Jun 9, 2016 at 8:08
It seems like a permission problem: probably the script test.php hasn't the permission to add that folder. There is also the possibility that the path /var/www/html doesn't exist on the remote server. These are my ideas... — gior91
– gior91, Commented Jun 9, 2016 at 8:10

Endre Simo · Accepted Answer · 2016-06-09 08:23:45Z

2

In this case it's recommended to use mkdir within try...catch function and capture the error if it's the case.

On the other hand mkidr will return a boolean value: true if the directory creation was successful or false in the case of a failure.

1.version

try {
    mkdir("/var/www/html/test", 0700, true);
} catch ($ex Exception) {
    echo $ex->getMessage();
}

2.version

if (!mkdir("/var/www/html/test", 0700, true)) {
    echo 'Failed to create folder...';
}

If mkdir cannot create the folder two things you need to check: if the folder exist and if it has the right permissions. By this i mean if the user group is set to apache (because apache, through web browser is executing the mkdir command) and second if apache (www-data) has the necessary permissions to execute this command.

edited Jun 9, 2016 at 8:23

answered Jun 9, 2016 at 8:08

Endre Simo

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3 Comments

harshithdwivedi Over a year ago

Ok, so I did this and the response that I get is "Failed to create folder.." so probably some permission issues, I'll have a look at that Just one more thing, the command alert(response); executes the script on my server? I am a bit new to this so this part wan't clear to me.

Endre Simo Over a year ago

it't a javascript action, it has nothing to do with server side. please check my edited answer.

harshithdwivedi Over a year ago

Thanks, it works :) Had to use this guide to set the correct permissions http://fideloper.com/user-group-permissions-chmod-apache

Borja Tur · Accepted Answer · 2016-06-09 08:10:32Z

1

Revise your php.ini in the server, the tag disable_functions = "..." and making sure that mkdir not this included in the list.

answered Jun 9, 2016 at 8:10

Borja Tur

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