How to Efficiently Create a Comma-Separated String from a PHP Array?

Converting Array to Comma-Separated List in PHP

Question:

How can you effortlessly generate a comma-separated list from an array in PHP, eliminating the need to manually remove the trailing comma?

Solution 1: Using implode

Utilizing the implode function provides an efficient solution for this task. It seamlessly concatenates array elements with a specified separator.

$fruit = array('apple', 'banana', 'pear', 'grape');
$commaList = implode(', ', $fruit); // "apple, banana, pear, grape"

Solution 2: Controlling Trailing Comma

In certain scenarios, you may not require a trailing comma. To achieve this, manipulate the array elements individually.

$prefix = $fruitList = '';
foreach ($fruits as $fruit) {
    $fruitList .= $prefix . '"' . $fruit . '"';
    $prefix = ', ';
}

Additional Note:

If you initially append commas after each element, you can simply trim the trailing one using rtrim.

$list = rtrim($list, ', ');

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