Is there a native way of doing \"HH:MM:SS\" to seconds with PHP 5.3 rather than doing a split on the colon\'s and multipling out each section the relevant numbe
Unfortunately not - as PHP isn't strongly typed there's no concept of a time type and hence no means to convert between such a string and a "seconds" value.
As such, in practice people often split the string and multiply out each section as you mentioned.