mysqli_stmt::bind_param(): Number of elements in type definition string doesn't match number of bind variables
Solution 1
The characters in the string should not be separated by commas:
$stmt->bind_param("sss...", /* variables */);
You can see this format demonstrated in the examples on the manual page.
Solution 2
there are 65 string params so if there are 65 s's you have the correct number. However the errors are appearing because you separated the s's by commas. Instead of $stmt->bind_param("s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s..."
it should be
$stmt->bind_param("sssssssssssssssss..."
This should solve your errors.
Solution 3
The character in the bind_param
should not be separated by a comma.
If you have to bind two variables do this:
$stmt->bind_param('ss', $firstvariable, $secondvariable);
Samuel Stiles
Updated on July 09, 2022Comments
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Samuel Stiles almost 2 years
So I have this massive headache inducing query that I need to perform involving 65 form inputs needing to be injected into a database using mysqli prepared statements.
The issue I'm running into is that it says the # of variables I am attempting to call
bind_param
on does not match the # of "s"'s that I am using. I counted a dozen times and do not see where I am going wrong here. There are 65 variables, and 65 "s"'s.Can anyone see something I'm missing? Or am I perhaps using the bind_param method in an incorrect manner?
// Preparing our query statement via mysqli which will auto-escape all bad characters to prevent injection $query3 = 'INSERT INTO datashep_AMS.COMPLETE_APPLICATIONS ( project_name, status, funding_requested, project_title, program, county, parish, name_of_watercourse, which_is_a_tributary_of, name_of_applicant, contact_person_or_project_supervisor, relationship_to_organization, business_phone, home_phone, email, signature_of_thesis_or_study_supervisor, mailing_address, postal_code, website, mailing_address_for_payment, hst_registration_no, total_cost_dollar, total_cost_percent, dollar_amount_requested_from_nbwtf, percent_amount_requested_from_nbwtf, descriptive_summary, background_of_organization, mandate, years_in_existence, membership, accomplishments, previous_project_name, previous_project_number, previous_project_amount_received_from_nbwtf, summary_of_activities, summary_of_Results, project_title_2, reason_and_or_purpose, objectives, project_description, methods, equipment_and_materials_required, personnel_required, proposed_start_date, proposed_end_date, type_of_data_to_be_stored, where_will_it_be_housed, monitoring, short_term_achievement, long_term_achievement, previous_studies, required_permits, consultants, short_term_commitment, long_term_commitment, project_duration, project_evaluation, promotion_of_project, promotion_of_client, publication_of_results, community_benefits, effects_on_traditional_uses, possible_changes_in_public_access_to_areas, possible_impact_on_wildlife_and_or_environment, likelihood_of_future_requests_for_funding, list_all_other_funding_sources_for_this_project ) VALUES ( ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ? )'; // "Preparing" the query using mysqli->prepare(query) -- which is the equivalent of mysql_real_escape_string -- in other words, it's the SAFE database injection method $stmt = $dbConnection->prepare($query3); // "Bind_param" == replace all the "?"'s in the aforementioned query with the variables below $stmt->bind_param("s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s,s", $project_name, $status, $funding_requested, $project_title, $program, $county, $parish, $name_of_watercourse, $which_is_a_tributary_of, $name_of_applicant, $contact_person_or_project_supervisor, $relationship_to_organization, $business_phone, $home_phone, $email, $signature_of_thesis_or_study_supervisor, $mailing_address, $postal_code, $website, $mailing_address_for_payment, $hst_registration_no, $total_cost_dollar, $total_cost_percent, $dollar_amount_requested_from_nbwtf, $percent_amount_requested_from_nbwtf, $descriptive_summary, $background_of_organization, $mandate, $years_in_existence, $membership, $accomplishments, $previous_project_name, $previous_project_number, $previous_project_amount_received_from_nbwtf, $summary_of_activities, $summary_of_Results, $project_title_2, $reason_and_or_purpose, $objectives, $project_description, $methods, $equipment_and_materials_required, $personnel_required, $proposed_start_date, $proposed_end_date, $type_of_data_to_be_stored, $where_will_it_be_housed, $monitoring, $short_term_commitment, $long_term_achievement, $previous_studies, $required_permits, $consultants, $short_term_commitment, $long_term_commitment, $project_duration, $project_evaluation, $promotion_of_project, $promotion_of_client, $publication_of_results, $community_benefits, $effects_on_traditional_uses, $possible_changes_in_public_access_to_areas, $possible_impact_on_wildlife_and_or_environment, $likelihood_of_future_requests_for_funding, $list_all_other_funding_sources_for_this_project); // Perform the actual query! $stmt->execute();