WordPress开发手册:add_shortcode()

函数原型

add_shortcode( string $tag, callable $callback )

函数描述

是否弃用

未弃用

函数参数

$tag
string
Required

Shortcode tag to be searched in post content.

$callback
callable
Required

The callback function to run when the shortcode is found.
Every shortcode callback is passed three parameters by default, including an array of attributes ($atts), the shortcode content or null if not set ($content), and finally the shortcode tag itself ($shortcode_tag), in that order.

函数返回值

函数位置

函数源码

function add_shortcode( $tag, $callback ) {
	global $shortcode_tags;

	if ( '' === trim( $tag ) ) {
		_doing_it_wrong(
			__FUNCTION__,
			__( 'Invalid shortcode name: Empty name given.' ),
			'4.4.0'
		);
		return;
	}

	if ( 0 !== preg_match( '@[<>&/\[\]\x00-\x20=]@', $tag ) ) {
		_doing_it_wrong(
			__FUNCTION__,
			sprintf(
				/* translators: 1: Shortcode name, 2: Space-separated list of reserved characters. */
				__( 'Invalid shortcode name: %1$s. Do not use spaces or reserved characters: %2$s' ),
				$tag,
				'& / < > [ ] ='
			),
			'4.4.0'
		);
		return;
	}

	$shortcode_tags[ $tag ] = $callback;
}

源码链接

WordPress
Github

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