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How to Convert a PHP Array to a Well-Formatted CSV File with Headers?
How to Convert a PHP Array to a Well-Formatted CSV File with Headers?
Oct 19, 2024 pm 06:58 PM
PHP Array Conversion to CSV: Streamlined Solution
Converting arrays to CSV files in PHP can be a pain. If you've been struggling to produce a properly formatted CSV, this article will provide a better solution.
The Problem: Single-Line CSV and No Header
Consider the following code:
<code class="php">$prods = [1, 2, 3];
foreach ($prods as $prod) {
$sql = "SELECT * FROM products WHERE id = '$prod'";
$result = $mysqli->query($sql);
$info = $result->fetch_array();
}
// ... rest of the code</code>
This code may result in a CSV file that is a single, long line instead of the desired format with headers and line breaks.
Solution: Using fputcsv()
To fix this issue, replace the code that writes to the CSV file with the following:
<code class="php">$output = fopen("php://output",'w') or die("Can't open php://output");
header("Content-Type:application/csv");
header("Content-Disposition:attachment;filename=pressurecsv.csv");
fputcsv($output, array('id','name','description'));
foreach($prod as $product) {
fputcsv($output, $product);
}
fclose($output) or die("Can't close php://output");</code>
The fputcsv() function automatically handles escaping, field delimiters, and line endings, ensuring the CSV is properly formatted.
Additional Notes
- Use fopen('php://output', 'w') instead of hard-coding a filename to create the CSV in memory.
- Set the appropriate headers for the CSV download in header().
- Use fputcsv() to write the header row and subsequent rows of the CSV.
- Close the file in the end with fclose().
The above is the detailed content of How to Convert a PHP Array to a Well-Formatted CSV File with Headers?. For more information, please follow other related articles on the PHP Chinese website!
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