Simple php version _ php instance

This article mainly introduces the simple version of the 9-9 multiplication table implemented by php. The code is simple and easy to understand and can be used to answer interview questions, if you need a friend, you can refer to the 9th multiplication table, which is also a program question for many interview tests. The Logic Thinking Ability of php interviewers is mainly about understanding and using algorithms, below is the php code written in php to output the jiujiu multiplication formula:

<? Phpfor ($ I = 1; $ I <= 9; $ I ++) {for ($ j = 1; $ j <= $ I; $ j ++) {echo "$ I * $ j = ". $ I * $ j. '';} echo'
';}?>

After reading it, is it very easy? It is two loops, the outer controls the number of rows in the loop, and the inner controls the number of inputs in each row.

Output result: