Convert google maps style json to url arguments to use for google maps static images.

convert-mapstylejson-to-urlargs.php

<?php

public function mapStylesUrlArgs($mapStyleJson)
{
	$params = [];

	foreach (json_decode($mapStyleJson, true) as $style) {
		$styleString = '';

		if (isset($style['stylers']) && count($style['stylers']) > 0) {
			$styleString .= (isset($style['featureType']) ? ('feature:' . $style['featureType']) : 'feature:all') . '|';
			$styleString .= (isset($style['elementType']) ? ('element:' . $style['elementType']) : 'element:all') . '|';

			foreach ($style['stylers'] as $styler) {
				$propertyname = array_keys($styler)[0];
				$propertyval = str_replace('#', '0x', $styler[$propertyname]);
				$styleString .= $propertyname . ':' . $propertyval . '|';
			}
		}

		$styleString = substr($styleString, 0, strlen($styleString) - 1);

		$params[] = 'style=' . $styleString;
	}

	return implode("&", $params);
}