Author Archive for: Calvin Buckley

Entries by Calvin Buckley

Sending Email from PHP on IBM i

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With reliable email functionality being one of the top concerns of IBM i PHP users, we’ve made sure that Seiden PHP+ includes everything you need to send email. The PHP mail() function works well, as do components such as Zend\Mail and PHPMailer. Over the past couple of years, we’ve been hearing from disappointed PHP users that mail() didn’t work in other community PHP distributions (and some builds of Zend Server). PHP mail() requires an external program that implements the sendmail interface. If your PHP distribution lacked sendmail or equivalent, you might have received a cryptic error message such as:

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Porting Extensions to PHP 8

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PHP 8 has been the biggest change to PHP in years. While PHP 8’s JIT compiler gets most of the publicity, more significant to most developers would be PHP 8’s changes that encourage better coding practices. PHP 8 pushes developers to use clearer syntax and is stricter with problematic code. While the PHP runtime itself has improved, what about extensions such as ibm_db2? What changes do extension developers need to make to adapt to PHP 8? As maintainers of the ibm_db2 and PDO_IBM database extensions, we’ve learned what it takes to make PHP extensions compatible with PHP 8.

Getting Started with SSH for IBM i

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Secure Shell (SSH) provides the best environment for installing, managing, and running open source software on IBM i. Among SSH’s advantages over QSHELL and QP2TERM: IBM i’s SSH command line works just like SSH on Linux or Windows, helping the IBM i platform appeal to younger developers and admins. Supporting a wide range of Unix programs and open source software, such as git, SSH is our go-to terminal interface for open source and PASE. This article covers how to set up SSH and use it to connect to IBM i servers.

RPM Package Signing

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In our current work with RPMs, we’re adding digital signatures to our PHP packages to enhance their security. Package Signing ensures the integrity of a package at rest by detecting and deterring tampering. A package is signed with a private key, which is then validated by the public key provided by the package builder and installed by the user. This technique complements TLS encryption, which guards against tampering and snooping in transport.