问题描述
我想将 preg_match_all()
用于循环内的“msg”列值。
但在我的循环中,它不适用于所有“msg”列值,仅适用于最后一个。
以下是我写的代码:
$query = "SELECT email_id,msg FROM emailtry";
$result = MysqLi_query($link,$query);
while ($obj = MysqLi_fetch_object($result)){
printf("%s (%s) \n\n\n",$obj->email_id,$obj->msg);
$string = $obj->msg;
if (is_array($result) || is_object($result) ){
foreach($result as $result){
if (preg_match_all("/Dynamic Screen:\s+[A-Za-z0-9_-]+\s+[A-Za-z0-9_-]+/",$string,$notificationtype)){
var_dump($notificationtype);
}else{
return false;
}
if (preg_match_all("/[A-Za-z0-9_-]+@[A-Za-z0-9_-]+\.[A-Za-z0-9_-]+/",$bodylogonused)){
var_dump($bodylogonused);
}else{
return false;
}
}
}
}
解决方法
当 while()
已经在执行时,它里面还需要 foreach()
什么?
像下面这样:
$query = "SELECT email_id,msg FROM emailtry";
$result = mysqli_query($link,$query);
while ($obj = mysqli_fetch_object($result)){
if (preg_match_all("/Dynamic Screen:\s+[A-Za-z0-9_-]+\s+[A-Za-z0-9_-]+/",$obj->msg,$notificationtype)){
var_dump($notificationtype);
}
if (preg_match_all("/[A-Za-z0-9_-]+@[A-Za-z0-9_-]+\.[A-Za-z0-9_-]+/",$bodylogonused)){
var_dump($bodylogonused);
}
}
注意:正如@mickmackusa 建议的那样,在您的代码中使用 [\w-]
而不是 [A-Za-z0-9_-]
。 (更简洁)
$query = "SELECT email_id,$query);
while ($obj = mysqli_fetch_object($result)){
if (preg_match_all("/Dynamic Screen:\s+[\w-]+\s+[\w-]+/",$notificationtype)){
var_dump($notificationtype);
}
if (preg_match_all("/[\w-]+@[\w-]+\.[\w-]+/",$bodylogonused)){
var_dump($bodylogonused);
}
}