在PHP中使用的是执行相同的代码集的次数。作者的基本语法如下：
for循环只是一个多一点的代码，同时循环添加到它。而所涉及的一个循环的共同任务是：
设置一些计数器变量的初始值。
请检查条件语句是正确的。
执行中的代码循环。
增量在每个迭代结束通过循环计数器。
for循环允许你定义一个简单的代码行这些步骤。它似乎有一种奇怪的形式，所以一定要密切注意语法用！
FOR (expression 1, expression 2, expression 3)
{
[code to execute]
}
for ( initialize a counter; conditional statement; increment a counter){
do this code;
}
看简单实例一
FOR ($i = 0; $i
{
print "value is now " . $i . "
";
}
输出值
value is now 0
value is now 1
value is now 2
在第一循环，$i=0，这意味着表达，（$i
在第二循环，$ = 1，这意味着表达，（$i
在第三迭代，$i= 2，这意味着表达，（$i
在第四迭代，$i= 3，这意味着表达，（$i
实例二
$brush_price = 5;
echo "
| Quantity | ";Price |
|---|---|
| "; echo $counter; echo " |
"; echo $brush_price * $counter; echo " |
输出值
Quantity Price
10 50
20 100
30 150
40 200
50 250
60 300
70 350
80 400
90 450
100 500
文章原创于www.111cn.net
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