Here are 10 simple tips to run your PHP code more faster http://www.thinkflick.com/php/10-simple-tips-to-optimize-and-run-your-php-code-faster/
Is this multi server? because one function works faster on linux, second faster on windows. One function works faster witch small variable but slow witch large, second works faster witch large variable... and same.
Nice, I just think point 8 is not good to remember (if(isset($var{4})), as they are going to deprecate this curly method in PHP6, use $var[4] instead
Hmm, I didn't know that. But require_once not always avoidable if you have complex structure in your script.
1- Better way. You should instead just use single quotes if there are no variables within the string. Double quotes checks and parses variables within it. 8- Why would you even use strlen as a replacement to isset anyway? 10- Laziness kicks in here, at the cost of resources, lol.
Thats why you should have properly planned code in your scripts. This will make sure that you won't need to use any _once functions as all files included will be included once, and only once.
How many blogs are going to repost the same optimization tips? Could have atleast re-written them instead of just adding in the fancy syntax hilighter... Just google PHP optimization tips, you will find atleast 40 results with the same copy and pasted tips... BOO!
Interesting tips and a really nice site. I'm taken aback by how similar it is in some respects to my own. You seem to be working in the same areas. Check me out (signature) and let me know if you're interested in exchanging links.