Author Archives: itdoctor - Page 31
Analyze your slow mysql query with “Explain”
When you think your mysql is slow , the first step is to analyze your sql query with “Exlain” command. This is an example explain select * from table1...
child pid XXXX exit signal File size limit exceeded (25) on apache log
Today I found that Apache on my server was very slow and a lot of child pid xxxx exit signal File size limit exceeded (25) errors in error_log. It...
How to search large files on linux
You can use this command to search for files larger than 20MB on your linux box , change the number to meet your needs find / -type f -size...
Want to create a survey
I just tried this today , it’s really good , you can start with a free plan. This plan allows you to have upto 10 questions per survey and...
Measuring time to execute PHP script
If I’m ever wondering how long my PHP scripts take to execute, I add this code to the start of my pages: <?php function getTime() { $a = explode (' ',microtime()); return(double) $a + $a; } $Start = getTime();...
Hello world!
Welcome to WordPress. This is your first post. Edit or delete it, then start blogging!