Static analysis refers to the review of code without executing it. Such review may be done as a phase of a coding project, or naturally occurring when the code is handed to a new programmer (That new programmer may also be yourself, six months later). In both case, the goal is to spot defects by […]
21
Aug
Aug
Install Gremlin for Neo4j 2.2 At the heart of the Exakat engine, we use Gremlin and Neo4j. Neo4j is the graph database, and Gremlin is the graph traversal language. Until today (2015, August 20th), Neo4j 2.2 had no working plug-in for Gremlin, which made us use the latest neo4j 2.1.8, but miss all the effort […]
Manual Code Review used to be The established standard is one write the code, and another one review it. This is safe and sound: no one can both be judge and be judged. Times are changing and they won’t stay long that way. Manual code reviews are definitely good for team building : obviously, experienced developer […]
06
Aug
Aug
The art of PHP callback PHP callback are functions that may be called dynamically by PHP. They are used by native functions such as array_map, usort, preg_replace_callback, etc. Here is a reminder of the various ways to create a callback function in PHP, and use it with the native functions. String functions Strings are the […]
07
Jul
Jul
When come the time for preparing a new server, there is always the dreaded question of configuration. Which directives have to be configured in php.ini. Certainly, we have (and love) the phpinfo() function, that displays the current configuration of a server. It is so useful to check that one directive has the good value or […]
25
Jun
Jun
Isolated blocks 4 % of PHP code has a strange sickness : isolated block. Blocks are a sequence of instructions that are grouped together in the code : blocks are marked with curly braces, and they are usually found after a flow control command, such as if…then, for or switch to group several instruction under the same branching. […]
11
Jun
Jun
Update (July 2015) This was related to the dot-deb, that kept using an old PCRE library. This has been fixed directly in the package by Guillaume Plessis, and is working fine now. I’ll keep this post in case this helps anyone in similar situations, but this shouldn’t be useful anymore. WordPress not sending mail while […]
09
Jun
Jun
PHP skips some code When PHP skips some code, it features code optimizations : it skips automatically an instruction, as soon as it detects useless job. No need for code cache, this is plain vanilla PHP. Implied if The classic case is when using logical operators && or ||. When the first operand of an && […]
01
Jun
Jun
New in PHP 7 Let’s review the new constants, functions, classes, interfaces and trait that PHP 7 features. We have reviewed the core of PHP (as of June 1rst) and spotted quite some new structures that are already available to you if you’re testing the water with PHP7. New Constants in PHP 7 In the core, […]
26
May
May
Prepare for PHP 7 error messages (part 3) This is the third party of our presentation of PHP error messages. In the first article, we covered the evolution of error messages in the PHP binary, and in the second, we reviewed eight new messages. We’ll finish with sever other messages and three that were dropped […]