PHP使用continue加数字终止嵌套foreach循环

// 单层 foreach 循环示例
foreach ($array as $key => $value) {
    if ($value == 5) {
        break;
    }
}

// 嵌套 foreach 循环示例，使用 continue 2 终止外层循环
foreach ($array as $key => $value) {
    foreach ($value as $key2 => $value2) {
        if ($value2 == 5) {
            continue 2;
        }
    }
}

// 只终止内层循环，外层循环继续执行
foreach ($array as $key => $value) {
    foreach ($value as $key2 => $value2) {
        if ($value2 == 5) {
            continue 1;
        }
    }
}