PHP mysqli_fetch_lengths() Function

In this chapter you will learn:

1. Definition for PHP mysqli_fetch_lengths() Function
2. Syntax for PHP mysqli_fetch_lengths() Function
3. Parameter for PHP mysqli_fetch_lengths() Function
4. Return for PHP mysqli_fetch_lengths() Function
5. Example - returns the length of the columns in the result set

Definition

The mysqli_fetch_lengths() function returns the length of the fields in the result set.

Syntax

PHP mysqli_fetch_lengths() Function has the following syntax.

Parameter

Return

It returns an array if integer that represents the size of each column or FALSE if an error occurs.

Example

The following code returns the length of the columns in the result set.

<?php/*from   j a  v  a  2 s  .c om*/
$con=mysqli_connect("localhost","my_user","my_password","my_db");

if (mysqli_connect_errno($con)){
  echo "Failed to connect to MySQL: " . mysqli_connect_error();
}

$sql="SELECT * FROM emp ";

if ($result=mysqli_query($con,$sql)){
  $row=mysqli_fetch_row($result);

  foreach (mysqli_fetch_lengths($result) as $i=>$val){
     printf("Field %2d has length: %2d\n",$i+1,$val);
  }
  mysqli_free_result($result);
}

mysqli_close($con);
?>

Next chapter...

What you will learn in the next chapter:

1. Definition for PHP mysqli_fetch_object() Function
2. Syntax for PHP mysqli_fetch_object() Function
3. Parameter for PHP mysqli_fetch_object() Function
4. Return for PHP mysqli_fetch_object() Function
5. Example - returns the current row of a result set, then print each field's value

PHP mysqli_affected_rows() Function

PHP mysqli_autocommit() Function

PHP mysqli_change_user() Function

PHP mysqli_character_set_name() Function

PHP mysqli_close() Function

PHP mysqli_commit() Function

PHP mysqli_connect() Function

PHP mysqli_connect_errno() Function

PHP mysqli_connect_error() Function

PHP mysqli_data_seek() Function

PHP mysqli_dump_debug_info() Function

PHP mysqli_errno() Function

PHP mysqli_error() Function

PHP mysqli_error_list() Function

PHP mysqli_fetch_all() Function

PHP mysqli_fetch_array() Function

PHP mysqli_fetch_assoc() Function

PHP mysqli_fetch_field() Function

PHP mysqli_fetch_field_direct() Function

PHP mysqli_fetch_fields() Function

PHP mysqli_fetch_lengths() Function

PHP mysqli_fetch_object() Function

PHP mysqli_fetch_row() Function

PHP mysqli_field_count() Function

PHP mysqli_field_seek() Function

PHP mysqli_field_tell() Function

PHP mysqli_free_result() Function

PHP mysqli_get_charset() Function

PHP mysqli_get_client_info() Function

PHP mysqli_get_client_stats() Function

PHP mysqli_get_client_version() Function

PHP mysqli_get_connection_stats() Function

PHP mysqli_get_host_info() Function

PHP mysqli_get_proto_info() Function

PHP mysqli_get_server_info() Function

PHP mysqli_get_server_version() Function

PHP mysqli_info() Function

PHP mysqli_init() Function

PHP mysqli_insert_id() Function

PHP mysqli_kill() Function

PHP mysqli_more_results() Function

PHP mysqli_multi_query() Function

PHP mysqli_next_result() Function

PHP mysqli_num_fields() Function

PHP mysqli_num_rows() Function

PHP mysqli_options() Function

PHP mysqli_ping() Function

PHP mysqli_query() Function

PHP mysqli_real_connect() Function

PHP mysqli_real_escape_string() Function

PHP mysqli_refresh() Function

PHP mysqli_rollback() Function

PHP mysqli_select_db() Function

PHP mysqli_set_charset() Function

PHP mysqli_sqlstate() Function

PHP mysqli_ssl_set() Function

PHP mysqli_stat() Function

PHP mysqli_stmt_init() Function

PHP MySQL mysqli_thread_id() Function

PHP mysqli_thread_safe() Function