[Help Wordpress] Is there a way to choose the starting slider via php function?

I have added the necessary option for startslideID

if(count($init_codes) > 0 ) {
// $init_codes is an array that holds slider JavaScript initialization codes // You may do string replacement to change option startSlideId $configslide = str_replace("template:'default'","template:'default',startSlideId:2",$init_codes[2]);

}

$configslide is the altered option. What do I need to do with this variable in order to work in the slide?

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