作业帮请求讲解一下continue的用法：while($row = $dsql->GetArray()) { $tb = str_replace('#@__',$cfg_dbprefix,$row['addtable']); if(empty($tb) || isset($doarray[$tb]) ) { continue;?} else { $sql = "INSERT INTO `#@__arctiny`(id,typeid,typeid2,arcrank
来源：学生作业帮助网 编辑：作业帮 时间：2024/04/30 07:58:39
![请求讲解一下continue的用法：while($row = $dsql->GetArray()) { $tb = str_replace('#@__',$cfg_dbprefix,$row['addtable']); if(empty($tb) || isset($doarray[$tb]) ) { continue;?} else { $sql =](/uploads/image/z/13712714-26-4.jpg?t=%E8%AF%B7%E6%B1%82%E8%AE%B2%E8%A7%A3%E4%B8%80%E4%B8%8Bcontinue%E7%9A%84%E7%94%A8%E6%B3%95%EF%BC%9Awhile%28%24row+%3D+%24dsql-%3EGetArray%28%29%29+%7B+%24tb+%3D+str_replace%28%27%23%40__%27%2C%24cfg_dbprefix%2C%24row%5B%27addtable%27%5D%29%3B+if%28empty%28%24tb%29+%7C%7C+isset%28%24doarray%5B%24tb%5D%29+%29+%7B+continue%3B%3F%7D+else+%7B+%24sql+%3D+%22INSERT+INTO+%60%23%40__arctiny%60%28id%2Ctypeid%2Ctypeid2%2Carcrank)
请求讲解一下continue的用法：while($row = $dsql->GetArray()) { $tb = str_replace('#@__',$cfg_dbprefix,$row['addtable']); if(empty($tb) || isset($doarray[$tb]) ) { continue;?} else { $sql = "INSERT INTO `#@__arctiny`(id,typeid,typeid2,arcrank
请求讲解一下continue的用法：
while($row = $dsql->GetArray()) {
$tb = str_replace('#@__',$cfg_dbprefix,$row['addtable']);
if(empty($tb) || isset($doarray[$tb]) )
{
continue;?
} else {
$sql = "INSERT INTO `#@__arctiny`(id,typeid,typeid2,arcrank,channel,senddate,
sortrank,mid) SELECT aid,typeid,0,arcrank,channel,senddate,0,mid FROM `$tb` ";
$rs = $dsql->executenonequery($sql);
$doarray[$tb] = 1;
}
}
请问这里的continue;是什么意思?在这段代码中如果不写它,效果与写上它有何不同?
请求讲解一下continue的用法：while($row = $dsql->GetArray()) { $tb = str_replace('#@__',$cfg_dbprefix,$row['addtable']); if(empty($tb) || isset($doarray[$tb]) ) { continue;?} else { $sql = "INSERT INTO `#@__arctiny`(id,typeid,typeid2,arcrank
continue的意思是跳过本次循环进行下一次,还有break表示结束当前循环,例如
for ($i = 0; $i = 6) break;//如果$i大于等于6,结束循环
}
输出结果 0246
在你的示例中,这个continue可以不写,因为后面本来也没有需要执行的代码了.实际上你的示例代码应该写为
if(!empty($tb) && !isset($doarray[$tb]) ) {
$sql = .;
}
一个单if就行了,根本不需要if else