我可以在 eval() 中执行 mysql_query 吗？

Question

The community builder I am using requires php blocks to be parsed through eval(). Can I use the mysql_query in eval? If not how can I call info from the database in this eval()?

Here's my code so far:

$iProId = $this->oProfileGen->_iProfileID;
$sCat = mysql_query("SELECT genres from Profiles WHERE ID = ". $iProId);
print_r($sCat);

This gives me:
Resource id #167

Answer 1

If that code gave you that result when eval'd then yes, you can use mysql_query in eval and the rest of your question boils down to how you would have to use that result set.

In that case I would suggest something like:

$iProId = $this->oProfileGen->_iProfileID;
$sCat = mysql_query("SELECT genres from Profiles WHERE ID = ". $iProId);
while($row = mysql_fetch_assoc($sCat)) {
    print_r($row);
}

To loop over all rows in the resultset. If you want to know more the PHP website has all the goods on how to use mysql_* functions.

Answer 2

Have a look at mysql_fetch_array (and the other mysql_fetch_* functions) for how to get your data from the resource.

Answer 3

Using a query in eval() sounds strange to me, but you code is working right. mysql_query returns a mysql resource. Then you need to you mysql_fetch_array , mysql_fetch_row , or mysql_fetch_assoc to read it like:

$iProId = $this->oProfileGen->_iProfileID;
$result = mysql_query("SELECT genres from Profiles WHERE ID = ". $iProId);
$sCat = mysql_fetch_assoc($result);
print_r($sCat);