php 中for 循环是 PHP 中最复杂的循环结构
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<pre><code><?php
/* 示例 1 */
for ($i = 1; $i <= 10; $i++) {
echo $i;
}
/* 示例 2 */
for ($i = 1; ; $i++) {
if ($i > 10) {
break;
}
echo $i;
}
/* 示例 3 */
$i = 1;
for (;;) {
if ($i > 10) {
break;
}
echo $i;
$i++;
}</code></pre>
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