RichW questions

• Routing algorithm for multiple vehicles with multiple drops
• Converting a formula into PHP
• Weighted voting system with karma
• Rows with null value for group_concat not returned
• PHP include in a cron job
• PHP/MySQL - find items that have similar or matching properties
• Flot stacked bar chart not stacking
• Android in-app purchase - RESULT_ITEM_UNAVAILABLE
• Dynamically access object property using variable

RichW answers