How to Convert an Array into a CSV File in PHP?

Array to CSV Conversion

Converting an array into a CSV file provides a structured format for data exchange and analysis. The following steps outline a solution to this problem using a well-defined function:

1. Flatten the Array:

Multidimensional arrays require flattening before converting them to CSV. This ensures that all data is represented in a single level.

2. Define the CSV Conversion Function:

The function arrayToCsv() accepts an array, along with optional parameters for specifying the delimiter, enclosure, and whether to enclose all fields.

3. Escape Special Characters:

Values that contain the delimiter, enclosure, or whitespace need to be enclosed. This prevents data from being split into multiple columns incorrectly.

4. Handle Null Values:

If desired, null values can be converted to 'NULL' for better compatibility with MySQL.

Implementation:

To convert your provided array into a CSV file, follow these steps:

<?php
$array = yourArray;
$csv = arrayToCsv($array, ';', '"', true);
file_put_contents('data.csv', $csv);
?>

This will create a CSV file named data.csv with your array data in a structured format. The function arrayToCsv() provides customization options so that you can tailor the CSV output to your specific requirements.

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