FOR, FOREACH, and Input Box Names

I'm creating a table. The number of rows is based on a previous student entry. Students must submit how many courses they are currently taking (numberCourses). Once they submit that value, I want to draw a table. The amount of rows in this table must be equal to the amount of courses being taken. Taking 3 courses then you'll get a table with 3 rows. Each row will have two input boxes (creditBox and estimatedGrade). The rest of the program will work with these two values extensively. How can I individualize the name of each creditBox? That is to say, how can I keep the value entered inside the creditBox in row one seperate from the value entered inside the creditBox on line 4 (assuming there is a line 4). I use a FOR statement to draw my table based on the amount of courses being taken. Here's my code: for ($boxCreator=0; $boxCreator < $numberCourses; $boxCreator++) { echo ' <tr> <td align="center">Course</td> <td align="center"><input type="text" name="creditBox" size="2"></td> <td align="center"><input type="text" name="estimatedGrade" size="2"></td> </tr>'; } Thanks in advance, Roger