Fetching data from mysql data base in php [duplicate] - php

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Closed 10 years ago.
Possible Duplicate:
Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result
I am fetching data from MySQL data base in PHP but it gives error like following:
Warning: mysql_fetch_assoc(): supplied argument is not a valid MySQL result resource in /home/content/i/h/u/ihus235/html/cs/emrapp/surveyList.php on line 97
[]
Below is the query which I am using to select data:
$query = mysql_query("SELECT * form survey_Profile where user_Id='".$user_id."' ");

Answer 1

change
$query = mysql_query("SELECT * form survey_Profile where user_Id='".$user_id."' ");
to
$query = mysql_query("SELECT * from survey_Profile where user_Id='".$user_id."' ");

Answer 2

The cause of tthat error can be that mysql returns False.
You can add an:
echo "SELECT * form survey_Profile where user_Id='".$user_id."' ";
To see what string is send to mysql, eventualy test it directly in phpmyadmin.
Also, add this code to see the error from mysql:
if (mysql_errno()) {
echo "<br />". mysql_errno(). " : ". mysql_error(). "<br />";
}

Answer 3

You are getting this error because user_id value doesn't exist into your table.
So before executing your resource into mysql_fetch_assoc(), check whether you got matching rows or not.
if(mysql_num_rows($query) > 0) {
//user mysql_fetch_assoc now
}
And also you have sql syntax error, in your query replace "form" to "from"