1 2 3 4 5 | do { Statements; } while(A) |
1 2 3 4 5 6 7 8 9 10 11 12 13 | <?php $a = 5; //先判断$a是否大于5,如果大于5则执行。 while ( $a > 5) { echo "This is while." ; $a –; } do //先执行do之内的语句,然后进行判断。 { echo "This is do…while." ; $a –; } while ( $a > 5) ?> |
1 2 3 | <?php for ( $a = 5; $a > 5; $a –) echo "This is for" ; ?> |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | <?php $a = 5; $b = 10; while ( $a < 100) //$a<100开始循环 { echo "a = " . $a . "<BR>" ; //输出$a,"."时连接运算符,相当于java中的"+" while ( $b > 0) //$b>0,开始循环 { echo "b = " . $b . "<BR>" ; //输出$b $b –; if ( $b == 3) //如果$b==3,则跳出while($b>0) break ; } $a ++; if ( $a == 30) break ; //如果$a==30,就跳出while($a<100) } ?> |
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