Flattens a value into a string

Description

Converts an array into a string by imploding values with a comma, as per RFC2616’s rules for folding headers.

Parameters

$valuestring|arrayrequired

Value to flatten

Return

Source

public function flatten($value) {
	if (is_string($value)) {
		return $value;
	}

	if (is_array($value)) {
		return implode(',', $value);
	}

	throw InvalidArgument::create(1, '$value', 'string|array', gettype($value));
}

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