Mysql issue on form insert -


when insert thing in table via phpmyadmin have no problem, when try in form have created "admin-panel" in site message:

error: cannot add or update child row: foreign key constraint fails (`db467610239`.`articulo`, constraint `fk_articulo_genero` foreign key (`genero_id`) references `genero` (`id`) on delete no action on update no action)

thing number insert new table exists in other table linked genre. don't know why happening, i'm using same insert in phpmyadmin php tweaks:

insert articulo values (id= null   , nombre='$nombre', imagen='$imagen', text='$text', precio='$precio', popup='$popup', genero_id ='$genero_id')

your query should more this: 

$query = " insert articulo (     nombre, imagen, text, precio, popup, genero_id ) values (     '$nombre', '$imagen', '$text', '$precio', '$popup', $genero_id )";

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