Spintax para all import

//agregar codigo a funtions.php

function my_spintax( $string ) {
	$data = preg_match_all( "/\{(((?>[^\{\}]+)|(?R))*)\}/x", $string, $match );

	if ( !empty( $match ) ) {
		foreach ( $match as $key => $value ) {
			if ( !empty( $value ) ) {
				foreach ( $value as $values ) {
					$v = explode( "|", $values );
					$i = array_rand( $v );
					$string = str_replace( $values, str_replace( array( "{", "}" ), "", $v[ $i ] ), $string );
				}
			}
		}
	}
	return $string;
}

//ejemplo de shortcode para spintax
[my_spintax("{Based in|Located in|Situated in} London {and working|and running sessions} {through|via|over} skype {all around the world|all across the globe|worldwide|all over the world} {at Space to Evolve|at Space to Evolve} {our entire focus is to|our number one aim is to} {help you to|assist you to|guide you to} {lising the greatest vision|live the highest calling} of your life.")]


Fuente: https://wordpress.org/support/topic/spintax-function-not-working/