public function addExtraOembedProviders( $providers ) {

		// Format (string), Provider (string), Is format a regular expression? (bool)
		$providers['#https?://mathembed\.com/latex\?inputText=.*#i'] = [ 'https://mathembed.com/oembed', true ];
		$providers['#https?://www\.openassessments\.org/assessments/.*#i'] = [ 'https://www.openassessments.org/oembed.json', true ];
		$providers['://cdn.knightlab.com/libs/timeline*'] = [ 'https://oembed.knightlab.com/timeline/', false ];
		$providers['://uploads.knightlab.com/storymapjs/*/index.html'] = [ 'https://oembed.knightlab.com/storymap/', false ];

		return $providers;
	}
public function addExtraOembedProviders( $providers ) {

		// Format (string), Provider (string), Is format a regular expression? (bool)
		$providers['#https?://mathembed\.com/latex\?inputText=.*#i'] = [ 'https://mathembed.com/oembed', true ];
		$providers['#https?://www\.openassessments\.org/assessments/.*#i'] = [ 'https://www.openassessments.org/oembed.json', true ];
		$providers['://cdn.knightlab.com/libs/timeline*'] = [ 'https://oembed.knightlab.com/timeline/', false ];
		$providers['://uploads.knightlab.com/storymapjs/*/index.html'] = [ 'https://oembed.knightlab.com/storymap/', false ];

		return $providers;
	}
public function addExtraOembedProviders ( $ providers ) { // Format (string), Provider (string), Is format a regular expression? (bool) $ providers [ '#https?://mathembed\.com/latex\?inputText=.*#i' ] = [ 'https://mathembed.com/oembed' , true ] ; $ providers [ '#https?://www\.openassessments\.org/assessments/.*#i' ] = [ 'https://www.openassessments.org/oembed.json' , true ] ; $ providers [ '://cdn.knightlab.com/libs/timeline*' ] = [ 'https://oembed.knightlab.com/timeline/' , false ] ; $ providers [ '://uploads.knightlab.com/storymapjs/*/index.html' ] = [ 'https://oembed.knightlab.com/storymap/' , false ] ; return $ providers ; }
Add oEmbed providers
Hooked into `oembed_providers` filter

@see \WP_oEmbed
@see https://oembed.com/
@see https://github.com/iamcal/oembed/tree/master/providers

@param array $providers

@return array
Add oEmbed providers Hooked into oembed_providers filter