Getting error that does not match code

Here is the code from the page:

      echo "fred";
      $SqlString1 = "SELECT * FROM survey_data WHERE SEQ like \"".$strt."%\" and CITY != \"\" and STAT != \"\" and ZIP != \"\"";
      $survey_data = $conn->query($SqlString1);
      $row_survey_data = $survey_data->fetch();

This is the display from the page:
fred
Fatal error: Call to undefined method mysqli_result::fetch() in /home/langsyst/public_html/Lansco/Update_Building.php on line 54

Line 54 is the $row_survey_data fetch

Where the hell is it getting "mysqli"?
breeze351Asked:
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Guy Hengel [angelIII / a3]Billing EngineerCommented:
the connection object you are using is using mysqli under the hood
hence, you need to use fetch_row or fetch_all
http://php.net/manual/en/class.mysqli-result.php
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Dave BaldwinFixer of ProblemsCommented:
That often means your query above it did not succeed.  'mysqli_result::fetch' is the name of the actual function used by fetch() with the 'mysqli' driver.  http://php.net/manual/en/mysqli-stmt.fetch.php
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Marco GasiFreelancerCommented:
That error is the often the signal taht the query fails: try to run the query in phpMyAdmin (or equivalent) and see what's happen.
 Also you should use mysqli_error( $conn ); to get the error:
      echo "fred";
      $SqlString1 = "SELECT * FROM survey_data WHERE SEQ like \"".$strt."%\" and CITY != \"\" and STAT != \"\" and ZIP != \"\"";
      echo $SqlString1 . '<br>';
      $survey_data = $conn->query($SqlString1);
      if ($survey_data){
           $row_survey_data = $survey_data->fetch();
     }else{
         echo mysqli_error( $conn );
     }

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Ray PaseurCommented:
How to use the MySQL extensions, including:
  1. Conversion from MySQL to modern extensions
  2. How to test for query success or failure and visualize any errors
  3. How to retrieve results
  4. How to avoid trip-wires such as mixing procedural and object-oriented code
https://www.experts-exchange.com/articles/11177/PHP-MySQL-Deprecated-as-of-PHP-5-5-0.html

The article includes tested-and-working code examples you can copy for your own use.
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breeze351Author Commented:
Sometimes I'm a moron.  Changed it to fetch_array() and it worked.  Stared at this all afternoon!!!
Thanks
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Ray PaseurCommented:
Fetch_Array() is an anti-pattern.  Unless you deliberately tell it otherwise, It returns twice as much information as needed, making it the least efficient way to acquire information from the results set.

in my experience, the best function (correct amount of data, easy-to-use syntax) is Fetch_Object()
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