rlanvin questions

rlanvin answers

• How do I calculate retention using SQL?
• calling static method with static class variable as class name in php
• iCalendar Spec RRULE Multiple Times?
• symfony 1.4: How to pass exception message to error.html.php?
• When is foreach with a parameter by reference dangerous?
• How to query recurring appointments stored as iCal RRULE in a database table?
• Timing attack with PHP
• While each is deprecated, Foreach replacement takes a lot more time
• BIGINT mysql performance compared to INT