PHP Functions and server efficiency
46994
When is optimisation premature?
154982
cron Vs. sleep - which is the better one in terms of efficient cpu/memory utilization?
150666
How to define global functions in PHP
17648
Optimizations to reduce website loading time
96246
What's quicker and better to determine if an array key exists in PHP?
68398
PHP exec() vs system() vs passthru()
49412
What is the best method for getting a database connection/object into a function in PHP?
28884
PHP function overloading
21098
Is DateTime.Now the best way to measure a function's performance?
39634
Are PHP functions case sensitive?
23647
Why shouldn't I use mysql_* functions in PHP?
106870
Is there an overhead when nesting functions in Python?
33464
What is the difference between PHP echo and PHP return in plain English?
18131
How Do I improve the performance of my Drupal7 Site?
143750
Simplest way to profile a PHP script
44241
Can I create a PHP function that I can call without parentheses?
62267
MySQL stored procedure vs function, which would I use when?