run php scripts within process-wire CMS

[werner]

How can I execute a php script like

echo "hallo world";

within a process-wire site.

I copied the php script, but only the text command of the php scripts was displayed on the fronted. 

[LostKobrakai]

Do you mean a external php file or literally the string "echo …"? The first one you'd include/require and the latter one can be executed by eval. But keep in mind that any dynamic php code can be a security issue if not handled with care.

[werner]

I wrote some special php scripts to communicate with a sql data base (readsql.php, writesql.php, ...) and now I would like to call the scripts between normal html commands. I tried with the readsql.php script like this:  

<?php require("readsql.php"); ?>

but only this text code was shown on the fronted.

In which directory should I move this readsql.php file to locate it without a path in the require call ?

Or  is there a better way to handle site content that should perform calculations?

Edited December 11, 2016 by owzim
fixed font style mish mash, added code block

[fbg13]

You're using <?php require("readsql.php"); ?> inside a php file right?

[werner]

23 hours ago, LostKobrakai said:

Do you mean a external php file or literally the string "echo …"? The first one you'd include/require and the latter one can be executed by eval. But keep in mind that any dynamic php code can be a security issue if not handled with care.

 

[werner]

On a normal page with html code created by the processwire cms I would like to execute an external developed php file.  If this page is called by a nav bar, then the php file should be loaded and executed. On a standard html page it could look like:

<hr>

<p>

<?php

require("readsql.php");

?>

</p>

<hr>  

If I type this code on the backend, the commands are interpreted as pur text and they are not executed on the fronted. 

[LostKobrakai]

This does work in processwire's templates just like in any other php file. You just need to make sure the path to your readsql.php is correct.

[Robin S]

2 hours ago, werner said:

If I type this code on the backend, the commands are interpreted as pur text and they are not executed on the fronted. 

If you enter PHP code into an inputfield in Page Edit you would have to eval() it in your template in order for it to execute. But the idea of entering PHP code into Page Edit is really not good. If you want to execute a PHP block within some HTML coming from Page Edit then use the Hanna Code module.

[owzim]

Hello @werner, welcome to the ProcessWire forum.

The fact that you're fiddling with sql suggests that you are an advanced user, so why inject PHP directly into a text field? That's not what it's for. If you really want to execute individual PHP code on each page, you might want to use something like Hanna Code.