Invoking External PHP to JavaScript

External sources for JavaScript and an Ajax based application used to be ill advised to developers for security purposes. However, because of the advancement of JavaScript techniques and more security measures implemented in coding, invoking a source outside the client side is already tolerable. Invoking external functions could be possible as long as they come with .js file or the specified data format of the application such as CSS or JSON.

But if the developer wants to push further for more data and interaction, they could even invoke PHP as part of their application. This might seem impossible at first but because of the increased functionality of JavaScript, developers can now invoke this form of function for an efficient Ajax based application.

PHP in JavaScript could be done but there are limitations that every developer has to go through. First and foremost is the limitation of functions that could be used in the application. As much as possible, developer have to limit one PHP variable in every function. This is recommended since multiple PHP functions as variables in a single JavaScript function would push for more bandwidth and resources on the client side.

The surprising part of invoking PHP in the Ajax or JavaScript based application is in the ease of usage. Instead of inserting the PHP function along with the JavaScript function, the PHP should be indicated as early as possible in the application. The source should be placed right in the header. This is done so that the browser would be aware that PHP would be used as part of the Ajax based application. It doesn’t even matter what browser you are using right now. As long as you place them in the header, you’ll be able to conveniently use external PHP as part of the application.

The challenge in using external PHP is on making the function conform to the application. Since your application can only read .js files and commands, the application should not be able to read .php functions and commands.

The work around in this problem is when the developers insert the function of .php inside the function called document.write (). By inserting the function within the said function in JavaScript, developers should be able to convert the function for more conformity. It doesn’t even have to be changed according to .js since JavaScript and the browser will automatically recognize the application.

With the inclusion of .php in the JavaScript application as an external source, the limitation is almost endless. Aside from the fact that more functions could be added, developers should be able to invoke data from the server side. This will practically give them an unlimited extension since they will be able to access server side data which is almost unavailable in JavaScript. This might even decrease bandwidth requirement since the push for more data will not come from the client side but will be made from an external source. As long as the external data is called in the header, external PHP is possible and beneficial to developers and users.