Sometimes, for the best evaluation outcomes, a hands-on approach might be needed. For this reason, Aspose.Slides provides different purchase plans and also offers a Free Trial and a 30-day Temporary License for evaluation.
You can easily download Aspose.Slides for evaluation. The evaluation package is the same as the purchased package. The evaluation version simply becomes licensed after you add a few lines of code to apply the license.
Evaluation Version Limitation
The evaluation version of Aspose.Slides (without a license specified) provides the full product functionality, but it inserts an evaluation watermark at the top of the document on open and save. You are also limited to one slide when extracting texts from presentation slides.
About the License
You can easily download an evaluation version of Aspose.Slides for PHP via Java from its download page. The evaluation version provides absolutely the same capabilities as the licensed version of Aspose.Slides. Furthermore, the evaluation version simply becomes licensed after you purchase a license and add a couple of lines of code to apply the license.
The license is a plain-text XML file that contains details such as the product name, number of developers it is licensed to, subscription expiry date, and so on. The file is digitally signed, so do not modify the file. Even an inadvertent addition of an extra line break to the contents of the file will invalidate it.
To avoid the limitations associated with the evaluation version, you need to set a license before using Aspose.Slides. You are only required to set a license once per application or process.
After purchase, you need to apply the license file or stream.
You need to set the license:
- only once per application domain
- before using any other Aspose.Slides classes
Setting a License in Aspose.Slides for PHP via Java
Licenses can be applied from these locations:
- Explicit path
- As a Metered License – a new licensing mechanism
Use the setLicense method to license a component.
While multiple calls to setLicense aren’t harmful, they are a waste of resources (processor).
Applying a License Using a File
This code snippet is used to set a license file:
<?php require_once("http://localhost:8080/JavaBridge/java/Java.inc"); require_once("lib/aspose.slides.php"); use aspose\slides\License; $license = new License(); $license->setLicense("Aspose.Slides.lic"); ?>
When calling the setLicense method, the license name should be same as that of your license file. For example, you can change the license file name to “Aspose.Slides.lic.xml”. Then, in your code, you have to pass the new license name (Aspose.Slides.lic.xml) to the setLicense method.
Applying a License from a Stream
This code snippet is used to apply a license from a stream:
<?php require_once("http://localhost:8080/JavaBridge/java/Java.inc"); require_once("lib/aspose.slides.php"); use aspose\slides\License; $license = new License(); $license->setLicense($stream); ?>
Apply Metered License
Aspose.Slides allows developers to apply a metered key. This is a new licensing mechanism.
The new licensing mechanism will be used along with the existing licensing method. Those customers who want to be billed based on the use of API features can use the Metered Licensing.
After completing all the necessary steps to obtain this type of license, you will receive the keys, not the license file. This metered key can be applied using the Metered class specially introduced for this purpose.
The following code example shows how to set metered public and private keys:
<?php require_once("http://localhost:8080/JavaBridge/java/Java.inc"); require_once("lib/aspose.slides.php"); use aspose\slides\Metered; use aspose\slides\Presentation; use aspose\slides\SaveFormat; # Create an instance of CAD Metered class $metered = new Metered(); # Access the set_metered_key property and pass public and private keys as parameters $metered->setMeteredKey("*****", "*****"); # Get metered data amount before calling API $amountbefore = Metered::getConsumptionQuantity(); # Display information echo "<script>console.log('Amount Consumed Before: " . java_values($amountbefore) . "' );</script>"; # Load the document from disk. $pres = new Presentation(); # Get the page count of document echo "<script>console.log('Amount Consumed After: " . java_values($pres->getSlides()->size()) . "' );</script>"; # save as PDF $pres->save("out_pdf.pdf", SaveFormat::Pdf); # Get metered data amount After calling API $amountafter = Metered::getConsumptionQuantity(); # Display information echo "<script>console.log('Amount Consumed After: " . java_values($amountafter) . "' );</script>"; ?>