Simple example of php Yang Hui triangle

Simple example of php Yang Hui triangle

For example, according to the Yang Hui triangle, "each number is equal to the sum of the two numbers in the previous line ". // Error message Error_reporting (e_all &~ E_deprecated &~ E_notice ); // Print the functions of the Yang Hui triangle Function yanghui ($ iline) { $ A = array (); $ Nb = ''; For ($ I = 0; $ I <= $ iline; $ I ++) // Line { For ($ j = 0; $ j <= $ I; $ j ++) // column { If ($ I = $ j | $ j = 0) // row = column (that is, the last column) or the first row and first column { $ A [$ I] [$ j] = 1; } Else { $ A [$ I] [$ j] = $ a [$ i-1] [$ j] + $ a [$ i-1] [$ j-1]; // the value of the row + column = the sum of the two values in the previous row } } // Bbs.it-home.org } Return $; } // Print the Yang Hui triangle $ Adata = yanghui (4 ); Echo' '; print_r($adata); echo ' '; ?>