PHP - 使用字段名称作为变量

Question

I am getting the error "Warning: mysql_field_name() expects parameter 1 to be resource, object given in... on line 28"

I am fairly new to PHP, but what I am trying to accomplish is read a HTML file and replace a custom tag with the value of the record. The tag structure is |+FIELD-NAME-Record#+| For example if my sql returns two records for the "Name" field it will look for the following two tags |+Name1+| and |+Name2+| in the HTML file and replace it with the two returned values. Say Adam and Jim.

Below is the code that I have so far.

$c = '|+Name1+|<br>|+Name2+|';

echo(ReplaceHTMLVariables(mysqli_query($con,"SELECT * FROM nc_names"),$c));

function ReplaceHTMLVariables($results, $content){
    while($row = mysqli_fetch_array($results)){
        //Define a variable to count what record we are on
        $rNum = 1;

        //Loop through all fields in the record
        $field = count( $row );    
        for ( $i = 0; $i < $field; $i++ ) {
            //Use the field name and record number to create variables to look for then replace with the current record value
            $content = str_replace("|+".mysql_field_name( $results, $i ).$rNum."+|",$row[$i],$content);
        }

        //move to next record
        $rNum++;
    }
    return $content;
}

Line 28 references this line

$content = str_replace("|+".mysql_field_name( $results, $i ).$rNum."+|",$row[$i],$content);

Answer 1

You're mixing MySQL with MySQLi, and you don't really need to do all that if you pull mysqli_fetch_assoc() instead:

function ReplaceHTMLVariables($results, $content)
{
    //Define a variable to count what record we are on
    $rNum = 1;

    /*** Using Mysqli::fetch_assoc() ***/
    while( $row = mysqli_fetch_assoc( $results ) )
    {
        //Loop through all fields in the record
        /*** Variable $value passed by reference for performance ***/
        foreach( $row as $fieldName => &$value ) {
            $content = str_replace("|+".$fieldName.$rNum."+|",$value,$content);
        }

        ++$rNum; /*** Faster than $rNum++ **/
    }
    return $content;
}

mysqli_fetch_assoc() Pulls the data as an associative array, with the field name as the index key.