我如何修复mysqli_num_rows（）期望参数1为mysqli_result，boolean给出 [英] How do I fix mysqli_num_rows() expects parameter 1 to be mysqli_result, boolean given in

问题描述

您好我可以帮助我试图回应我的MySQL表格中的结果

我一直收到此错误



mysqli_num_rows （）期望参数1为mysqli_result，布尔值在







代码：





< pre lang =" php"> $ uuid = $ _REQUEST [&＃39; uuid&＃39;]; < br $>
// mysqli_query（$ link，& quot; SELECT * FROM website WHERE user =&＃39; $ usr&＃39;& quot;）;

$ result = mysqli_query（$ link，& quot; SELECT * FROM AlertPack WHERE Key =&＃39; $ uuid&＃39;& quot;）;

if（mysqli_num_rows（$ result） ）& gt; 0）{

//每行输出数据

while（$ row = mysqli_fetch_assoc（$ result））

{

echo（$ row [& quot; Type& quot;]。& quot; *& quot;。$ row [& quot; Message& quot;]。& quot ; $& quot;。$ row [& quot; Time& quot;]）;

}

}



？& gt;< / pre>

解决方案

uuid =

_REQUEST [&＃ 39; uuid&＃39;];

// mysqli_query（

link，& quot; SELECT * FROM website WHERE user =&＃39;

Hi there can anyone help me im trying to echo the results from my MySQL table
and i keep getting this error

mysqli_num_rows() expects parameter 1 to be mysqli_result, boolean given in



Code:


<pre lang="php">$uuid = $_REQUEST[&#39;uuid&#39;];
//mysqli_query($link, &quot;SELECT * FROM website WHERE user = &#39;$usr&#39;&quot;);
$result = mysqli_query($link, &quot;SELECT * FROM AlertPack WHERE Key = &#39;$uuid&#39;&quot;);
if (mysqli_num_rows($result) &gt; 0) {
// output data of each row
while($row = mysqli_fetch_assoc($result))
{
echo($row[&quot;Type&quot;] . &quot;*&quot; . $row[&quot;Message&quot;] . &quot;$&quot; . $row[&quot;Time&quot;]);
}
}

?&gt;</pre>

解决方案

uuid =

_REQUEST[&#39;uuid&#39;];
//mysqli_query(

link, &quot;SELECT * FROM website WHERE user = &#39;

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