Query Post By Custom Fields WordPress Advanced Custom Post

Query By a Custom Field Advanced Custom Fields Plugin

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I was looking into searching custom fields on WordPress and I found a simple method for this.

$posts = get_posts(array(
	'numberposts'	=> -1,
	'post_type'		=> 'post',
	'meta_key'		=> 'color',
	'meta_value'	=> 'red'
));

Here is also an advanced example on how to do it. 

$posts = get_posts(array(
	'numberposts'	=> -1,
	'post_type'		=> 'post',
	'meta_query'	=> array(
		'relation'		=> 'AND',
		array(
			'key'	 	=> 'color',
			'value'	  	=> array('red', 'orange'),
			'compare' 	=> 'IN',
		),
		array(
			'key'	  	=> 'featured',
			'value'	  	=> '1',
			'compare' 	=> '=',
		),
	),
));