Definition and Usage. Note: Fieldnames returned from this function are case-sensitive. In addition to storing the data in the numeric indices of the result array, the mysqli_ fetch _array() function can also store the data in associative indices, using the field names of the result set as keys. It is used to fetchs a result row as an associative array.
It returns an array of strings that corresponds to the fetched row.
An important thing to note is that using mysql_ fetch _array is not significantly slower than using mysql_fetch_row, while it provides a significant added value. Note Field names returned by this function are case-sensitive. Ask Question Asked years, months ago.
Both will works perfectly in mysqli_ fetch _array in while loops. NULL if there are no more rows in result set. Fetch a result row as an associative, a numeric array, or both.
So effectively, fetch_array() and fetch_assoc() can be essentially equivalent calls.
Returns an array of strings that corresponds to the fetched row, or FALSE if there are no more rows. The type of returned array depends on how result_type is defined. MYSQLI _BOTH will create a single array with the attributes of MYSQLI _NUM and MYSQLI _ASSOC.
From the documentation: By using the MYSQLI _ASSOC constant this function will behave identically to the mysqli _ fetch _assoc(), while MYSQLI _NUM will behave identically to the mysqli _ fetch _row() function. I see comparisons between mysqli _ fetch _ array () and mysqli _ fetch _all() that say that with mysqli _ fetch _all() it will take more memory and I will have to iterate over the array. When you use mysql_ fetch _ array (), it returns the rows from the data set one by one as you use the while loop. If there will be no recor while loop wont execute.
In this case, declare a boolean variable and make it true if it enters the while loop. What do I have to change? This function gets a row from the mysql_query() function and returns an array on success, or FALSE on failure or when there are no more rows. For all other queries like INSERT, UPDATE and DELETE, it returns TRUE on success. So, it would be used most probably by having both option of indexing.
Available only with mysqlnd. As mysqli_fetch_all returns all the rows as an array in a single step, it may consume more memory than some similar functions such as mysqli_fetch_array , which only returns one row at a time from the result set. This function will actually return an array with both the contents of mysqil_fetch_row and mysqli_fetch_assoc merged into one.
You can rate examples to help us improve the quality of examples. Procedural style only: A result set identifier returned by mysqli _query, mysqli _store_result or mysqli _use_result. MySQL Native Driver Only.
At a time it return only the first row as an associative array or numeric array. PHP function that allows you to access data stored in the result returned from a successful mysql_query. The mysqli _ fetch _ array () function fetches a result row as an associative array , a numeric array , or both.
Unable to display all rows of mysql_ fetch _ array using while loop. It fetches a single row from result set as numeric array using mysql_num, associative array using mysqli_assoc or both using mysqli-both. To display records from data row, array index or column name is used.
No comments:
Post a Comment
Note: Only a member of this blog may post a comment.