php if not null

PHP Tutorial Configuration Chinese Narration Let's see what you see, php.ini. [PHP] ;;;;;;;;;;;; WARNING;;;;;;;;;;;;; This is the default settings file for new PHP installations.; By default, PHP installs itself with a configuration suitable for;

Original: http://blog.csdn.net/fwkjdaghappy1/article/details/7703974/Believe that a lot of people who have been using MySQL for a long time, the concept of these two field properties is not very clear, the general will have the following questions:1,

Believe that a lot of people who have been using MySQL for a long time, the concept of these two field properties is not very clear, the general will have the following questions:1, my field type is not NULL, why I can insert null value2, the

Php judges that an array is null if (! Array (), or if (empty (array ()))? Php judges that an array is null if (! Array (), or if (empty (array ()))? Reply content: php determines if (! Array (), or if (empty (array ()))? First habitually, RTFM No,

Differences between null and not null in mysql and efficiency issues Mysql users may encounter the following situations: 1. My field type is not null. Why can I insert null values? 2. Why is not null more efficient than null? 3. When determining

Compiling the source package requires./configure then compile a. so fileOne less error packetInstall packageNormal displayThe LS directory has a./configure fileQuerying module LocationsEditing a configuration fileEditing a configuration fileIncrease

Source: www. oschina. netquestion57579_501_www.oschina.netquestion1579_000062. I think about it in the middle of the night. I thought about it before, after, when I decided to delete my blog account yesterday afternoon. Open the computer, open OSC,

PHP, a nested abbreviated name, is an abbreviation for the English Super Text preprocessing language (Php:hypertext preprocessor). PHP is an HTML embedded language, PHP and Microsoft's ASP quite a bit similar, is a server-side implementation of

PHP features: the command line mode starts with version 4.3.0. PHP provides a new type of cli sapi (Server Application Programming Interface, Server Application Programming Port) support, named CLI, command Line Interface, that is, Command Line

The number of PHP components and frameworks is incredibly large. There are mega-frameworks like Symfony and Laravel, as well as miniature frameworks like Silex and slim. There are even traditional frameworks that have existed long before modern PHP