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15 very useful PHP code snippets for PHP developers. By Viral Patel on May 7, 2009 Following are list of 15 most useful PHP code snippets that a PHP developer will need at any point in his career. Few of the snippets are shared from my projects and few are taken from useful php websites from internet. PHP command line syntax checking. Posted April 24th, 2010 in PHP The PHP CLI (command line interface) allows basic syntax checking of a PHP file.

PHP command line syntax checking

I'll show the basic usage of this in this post and then a couple of ways to check all files in a directory, and all files recursively down the directory tree as posted by a couple of people on Twitter. Syntax checking a single PHP file from the command line The syntax for checking is like this, where the -l flag is a lower case L: If the syntax in the file is correct you will see this: PHP snippets. Extremely useful PHP classes. PHP PSD Reader A few weeks ago, I wrote an article about this PHP which allow you to display any Adobe PSD file on screen.

extremely useful PHP classes

Very usefull to create preview of PSDs designed for clients, for example.Download Browser detect. 10 code snippets for PHP developers « The html blog. Sample PHP page. I'll start out by explaining some of the things I don't like about PHP.

sample PHP page

If I get this all out of the way, you can get to the useful stuff. I'll use this opportunity to say something instructive about how to use the language, based on its strengths and weaknesses, though, so it's not wasted time entirely. 1. PHP's syntax is weak. There will be times this will feel limiting. Practical PHP Programming. There are three operators that are complicated enough to get their own section, of which the first is the ternary operator.

Practical PHP Programming

It is called the ternary operator because it takes three operands - a condition, a result for true, and a result for false. If that sounds like an if statement to you, you are right on the money - the ternary operator is a shorthand (albeit very hard to read) way of doing if statements. Here's an example: First there is a condition ($age < 16), then there is a question mark, and then a true result, a colon, and a false result.

If $age is less than 16, $agestr will be set to 'child', otherwise it will be set to 'adult'. Practical PHP Programming. As this book aims to be a complete guide to PHP, it would not be right not to list the entire selection of operators in the language, so here goes: Arithmetic Operators If you have not used modulus since school, here's a quick refresher.

Practical PHP Programming

To calculate $a % $b, you first perform $a / $b and then return the remainder. For example, if $a were 10 and $b were 3, $b would go into $a 3 whole times (making nine) with a remainder of 1.