mysql_num_rows（）期望参数1是资源错误[重复]

Question

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• mysql_fetch_array()/mysql_fetch_assoc()/mysql_fetch_row()/mysql_num_rows etc… expects parameter 1 to be resource or result 32 answers

Can someone help me to solve this error:

mysql_num_rows() expects parameter 1 to be resource

This is my code:

$query = mysql_query($query);
$numrows = mysql_num_rows($query);
if ($numrows > 0){

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Answer 1

You may try this:-

$numrows = $query->num_rows;