PHP Weighted average calculation method

This article mainly introduces the PHP method for calculating the weighted average, and involves the related skills of php arithmetic operations. it has some reference value, for more information about how to calculate the weighted average in PHP, see the example in this article. Share it with you for your reference. The details are as follows:

<? Php session_start (); $ course_number = $ _ POST ["course_number"]; $ _ SESSION ["course_number"] = $ course_number; $ m = 0; echo ""."
";?>

<? Php session_start (); $ score = array (); $ balance = array (); $ sum = 0; $ total_score = 0; $ result = 0; for ($ I = 0; $ I <$ _ SESSION ["course_number"]; $ I ++) {$ score [$ I] = $ _ POST ["course ". $ I] ;}for ($ I = 0; $ I <$ _ SESSION ["course_number"]; $ I ++) {$ balance [$ I] =_ _ POST ["credit ". $ I] ;}for ($ I = 0; $ I <$ _ SESSION ["course_number"]; $ I ++) {$ sum = $ sum + $ score [$ I] * $ balance [$ I];} for ($ I = 0; $ I <$ _ SESSION ["course_number"]; $ I ++) {$ total_score = $ total_score + $ balance [$ I]; echo $ total_score."
";}$ Result = $ sum/$ total_score; echo" your Weighted average is: ". $ result;?>

I hope this article will help you with php programming.