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| docs:programming:php:optimizing_execution_time [2007/03/23 23:23] – created billh | docs:programming:php:optimizing_execution_time [2008/08/03 00:25] (current) – external edit 127.0.0.1 | ||
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| + | ====== Optimizing Execution Time ====== | ||
| + | * avoid printf() when echo is all you need | ||
| + | * avoid recomputing values inside a loop | ||
| + | * don't do this:< | ||
| + | for($i=0; $i < count($array); | ||
| + | </ | ||
| + | * instead, do this:< | ||
| + | $num = count($array); | ||
| + | for($i=0; $i < $num; $i++) { /* do something */ } | ||
| + | </ | ||
| + | * include only files that you need; split the functions into more files if they are not always used together | ||
| + | * if using a database, use persistent connections | ||
| + | * don't use a regular expression when a simple string-manipulation function will do the job; for example, to turn one character into another in a string, use str_replace(), | ||