Question

I have the following code:

while ($row = mysql_fetch_array($result, MYSQL_NUM))      {         for ($i=0; $i<count($row); $i++)         {             (DO THING HERE)             $row[$i] = str_replace('\n', ' ', $row[$i]);             $row[$i] = str_replace('\r', ' ', $row[$i]);         }      } 

I basically want to do, if the associative array key is equal to ’email’ (so $row[’email’]) then append ‘@gmail.com’ to it.

Answer 1

See the MYSQL_NUM you have there? That is going to return your data using the column indexes as keys (ie 0, 1, 2, etc).

You must either

a) find out which column index the email field is and do:

while ($row = mysql_fetch_array($result, MYSQL_NUM))  {     // 'email' is in column number 5     $row[5] .='@gmail.com';      for ($i=0; $i<count($row); $i++)     {         $row[$i] = str_replace('\n', ' ', $row[$i]);         $row[$i] = str_replace('\r', ' ', $row[$i]);     } } 

b) OR you can change MYSQL_NUM to MYSQL_ASSOC, and do:

while ($row = mysql_fetch_array($result, MYSQL_ASSOC))  {     $row['email'] .='@gmail.com';      foreach($row as &$value)     {         $value = str_replace('\n', ' ', $value);         $value = str_replace('\r', ' ', $value);     } } 

Note the '&' before $value to make it a reference.

I would do the latter (I prefer foreach to for 🙂