Do you know the ways to optimize your php code. Here we have some tips for you.

• If a method can be static, declare it as static. It will improve the Speed by a factor of 4.


• You should use echo as it is faster than print.


• If you have to concat string, Use echo's multiple parameters.


• Set the value of how many times it should be iterated before the loop. Do not assign the value in the loop.


• When a variable is no longer useful, unset those variables which will free memory.


• Use absolute urls in includes and requires.


• To get the time of when the script started its execution, you must prefer $_SERVER ['REQUEST_TIME'] than time ()


• Str_replace is faster than preg_replace


• It is much better to utilize switch statements than multi if, else if statements.


• Every time close your database connections when you got all the datas from DB


• Always use $row ['name'] to get data from DB.Because it is 7 times faster than $row [name]


• Don't use functions inside of for loop, such as for ($y=1; $y <= main ($arr); $y) the main () function gets called each time.


• If you declare a global variable and you are not using it in any function will slow down the performance because will check if the global exists or not.


• Methods should be in derived classes. This will run faster than the method which was defined in the base class.


• Surrounding your string by single quote (') instead of double quotes (") will be little faster as php looks for variables inside "" but not inside ''.


• A PHP script will be at least 2-10 times slower than a static HTML page by Apache. So it is better to use lot of static HTML pages with less scripts.


• You must install a PHP caching product to naturally boost the performance by 25-100% by eliminating compile times. Your PHP scripts will be recompiled each time if the scripts are not cached.


• Do not use OOP concepts too much because each method and object call consumes a lot of memory.


• Split methods that has the code you will really re-use too much.Do not split all the functions.

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