Disable generated schema by the All in One SEO plugin

                            
                                //Removes AIOSEO generated schema
add_filter( 'aioseo_schema_disable', 'aioseo_disable_schema' );

function aioseo_disable_schema( $disabled ) {
   return true;
}                            
                        

To add code to your header, use this code snippet:

                            
                                function custom_head_snippet() {
	?>
	<!-- Custom Snippet in Head -->
	<script>
		console.log("Snippet inside the <head> tag.");
	</script>
	<?php
}
add_action('wp_head', 'custom_head_snippet');                            
                        

To add code to your body, use this code snippet:

                            
                                function custom_body_snippet() {
	?>
	<!-- Custom Snippet After <body> -->
	<script>
		console.log("Snippet right after <body> tag.");
	</script>
	<?php
}
add_action('wp_body_open', 'custom_body_snippet');                            
                        

To add code to your footer, use this code snippet:

                            
                                function custom_footer_snippet(){
	?>
	<!-- Custom Snippet in Footer -->
	<script>
		console.log("Snippet after the <footer> tag.");
	</script>
	<?php
};
add_action('wp_footer', 'custom_footer_snippet');