Make sure to change the connection parameters and the query for your database. PHP gives you many handy array-related functions. The order of the elements is usually unimportant.
For example, you can sort array elements quickly and easily; search arrays for particular values or indices; and merge arrays together. Lot of applications want to export data in a CSV file.
To create an associative array, you pair each value with the index that you want to use for that value. If you want to fetch the data from mysql, you will have to replace these lines with code to connect to the database and get the data see below Lines goes through each row of data and outputs them Line 23 closes the file after we are done writing all the data to the file Creating and automatically downloading a CSV file using static data If instead of saving the file you want to directly download it in the browser, then use the code similar to the following: Arrays are very useful whenever you need to work with large amounts of data — such as records from a database — or group related data together.
Make sure the location in which you are saving this file is writeable by your server Line 5 is to add the column headers. In the above example, "Alfred Hitchcock" is given an index of 0, "Stanley Kubrick" has an index of 1, and so on.
An associative array is sometimes referred to as a hashand its indices are often called keys. To create an array, you use the array construct: An array is a special type of variable that can hold many values at once, all accessible via a single variable name.
Here are some more key facts about arrays in PHP: Explains how arrays work in PHP, and shows how to create both indexed and associative arrays. An element can store any type of value, such as an integer, a string, or a Boolean. For example, one element of an associative array might have an index of "name", while another element has an index of "age".
Most of the time, however, it helps to think of indexed and associative arrays as different types of arrays. Indexed arrays and associative arrays PHP lets you create 2 types of array: Line 2 tells the browser the MIME type of the content.
Typically the indices in an indexed array start from zero, so the first element has an index of 0, the second has an index of 1, and so on. Each value in an array is called an element You access each element via its indexwhich is a numeric or string value.
Like most programming languages, PHP lets you create arrays. This allows you to create multidimensional arrays Why arrays are useful Arrays in PHP offer many benefits, including the following: You can mix types within an array — for example, the first element can contain an integer, the second can contain a string, and so on.
You can even mix numeric and string indices within the same array if you like.
Usually, you use an indexed array when you want to store a bunch of data in a certain order. Also, the following database related code is only an example.
Typically, you use an associative array when you want to store records of data, much like using a database. In a real application it might in a different file and there should also be error handling. A ssociative arrays have string indices. We will also see how to automatically download the file instead of just showing it in the browser or giving the user a link to download it.
Furthermore, many PHP array functions are designed to work with either indexed or associative arrays.The fgetcsv() function parses a line from an open file, checking for CSV fields.
The fgetcsv() function stops returning on a new line, at the specified length, or at EOF, whichever comes first. This function returns the CSV fields in an array on success, or FALSE on failure and EOF.
length Optional. (PHP 5 >=PHP 7) SplFileObject::fputcsv — Write a field array as a CSV line. Description. Writes the fields array to the file as a CSV line. Parameters fields. An array of values. delimiter. The optional delimiter parameter sets the field delimiter (one character only).
This function takes a csv line and splits it into an array, much like fgetcsv does but you can use it on data that isn't coming in from a file, or you can read data from a file some other way (like if your Mac files aren't being read correctly) and use this to split it.
Save multidimensional array to CSV file. Rate this: Please Sign up or sign in to vote. See more: C# you can write to file line by line. JF 5-Sep am You are totally right. PHP: Finding differences in two multidimensional arrays.
This guy added a nice touch – array keys as header. write out the headers. fputcsv($fh, array_keys(current($data))); ultimedescente.com Oct 18, · - For each position in this dimension do the following: csv_string = "" Loop through the second dimensions and assign: csv_string = csv_string & Array-element> & csv separation character> Write the csv_string to the file.Download