How to change the price of a single product of woocommerce using php?

Hi there,

Have you considered using the dedicated https://woocommerce.com/products/product-vendors/ extension? I’m asking as it sounds like it covers the exact use-case you’re looking for.

If, however, you’re looking to add that using custom coding: I’m going to leave it open for a bit to see if anyone is able to chime in to help you out considering the code required is quite in-depth.

I can also recommend the following places for more development-oriented questions:

1. WooCommerce Slack Community: https://woocommerce.com/community-slack/
2. Advanced WooCommerce group on Facebook: https://www.facebook.com/groups/advanced.woocommerce/

The product object is described here:
https://docs.woocommerce.com/wc-apidocs/class-WC_Product.html

You can use the methods: set_regular_price(), set_sale_price() and set_price(). If there is a sale_price, price will be the sale price, if not then price will be the regular price.

@riaanknoetze Yes I’ve seen that Plugin, its not really what i was looking for my project is a little different. Anyways, thank you so much for the links!

@lorro Thanks! but How can I use these functions for just a single product, that it updates its price not only on display but in the database as well? Is there a way of doing that or am I asking for something that cannot be done?

I tried adding this code

function return_custom_price($price, $product) {
    global $post, $blog_id;
    $product = wc_get_product( '$post_id' );
    $post_id = $post->ID;
    $wc_product_id = 168;
    if($post_id == $wc_product_id) {
       $price = 77;
    }
    return $price;
}
add_filter('woocommerce_get_price', 'return_custom_price', 10, 2);

It does change the displayed price of the product, but the actual price in the database and the woocommerce dashboard remains the same.

• This reply was modified 4 years, 10 months ago by shamoonalitee.
• This reply was modified 4 years, 10 months ago by shamoonalitee.

Sorry, not tested:

// ...
$product->set_regular_price( $regular_price );
if( $sale_price ) {
  $product->set_sale_price( $sale_price );
  $new_price = $sale_price;
} else {
  $new_price = $regular_price;
}
$product->set_price( $new_price );
$product->save()

@lorro Thanks man! i’ll give it a try!

Thanks guys i finally got the code working… going to post the code here so that someone else with the same query can view it.

add_action( 'get_header', 'change_and_save_product_price', 10, 2 );

function change_and_save_product_price() {
    if ( get_post_type() === "product" ){ // or use: is_product()
        // Regular Price
        $regular_price = 400;

	// Sale Price (If you want to add any)
	$sale_price = 336;

	// Set the product ID of the product you want to change the price of
	$productID = 167;

	// Get product
        $product = wc_get_product($productID);

	// Set regular price
	$product->set_regular_price( $regular_price );

	// If your product has a Sale price
	if( $sale_price ) {
	$product->set_sale_price( $sale_price );
	$new_price = $sale_price;
	} else {
	$new_price = $regular_price;
				}
	// Set new price
	$product->set_price( $new_price );

	// Save to database (Note: You might want to clear cache of your page and then reload, if it still doesn't show up go to the product page and check there.)
	$product->save();
    }
}
do_action('get_header');

• This reply was modified 4 years, 10 months ago by shamoonalitee.

You may need to delete the relevant product transient:
wc_delete_product_transients( $post_id );

This is the cached product. The cache will remake itself next time the product is queried.

@lorro Oh thanks! didn’t about this…

Hi! I try your code and It’s worked perfec!

But I need to add a issue, if the price is to saved in a php variable the code doesn’t work, any idea??

$precio_producto = $precio_gramo * $row_peso[3] * $row_porc[3];

add_action( ‘get_header’, ‘change_and_save_product_price’, 10, 2 );

function change_and_save_product_price() {

if ( get_post_type() === “product” ){ // or use: is_product()

// Regular Price

$regular_price = $precio_producto;

// Sale Price (If you want to add any)

//$sale_price = ;

// Set the product ID of the product you want to change the price of

$productID = 732;

// Get product

$product = wc_get_product($productID);

// Set regular price

$product->set_regular_price( $regular_price );

// If your product has a Sale price

if( $sale_price ) {

$product->set_sale_price( $sale_price );

$new_price = $sale_price;

} else {

$new_price = $regular_price;

}

// Set new price

$product->set_price( $new_price );

// Save to database

$product->save();

}

}

do_action(‘get_header’);

To be able to use a value from outside a function you could use:
global $precio_producto;
in all functions where it occurs.

Thank you @lorro but it continues without returning any value:

$precio_producto = $precio_gramo * $row_peso[3] * $row_porc[3];
global $precio_producto;
add_action( ‘get_header’, ‘change_and_save_product_price’, 10, 2 );

function change_and_save_product_price() {
if ( get_post_type() === “product” ){ // or use: is_product()
// Regular Price
$regular_price = $precio_producto;

// Sale Price (If you want to add any)
//$sale_price = ;

// Set the product ID of the product you want to change the price of
$productID = 732;

// Get product
$product = wc_get_product($productID);

// Set regular price
$product->set_regular_price( $regular_price );

// If your product has a Sale price
if( $sale_price ) {
$product->set_sale_price( $sale_price );
$new_price = $sale_price;
} else {
$new_price = $regular_price;
}
// Set new price
$product->set_price( $new_price );

// Save to database (Note: You might want to clear cache of your page and then reload, if it still doesn’t show up go to the product page and check there.)
$product->save();
}
}
do_action(‘get_header’);

You need the global inside the function as well.

I get it ??

add_action( 'get_header', 'change_and_save_product_price', 10, 2 );

function change_and_save_product_price() {
    
    global $precio_producto;
    if ( get_post_type() === "product" ){ // or use: is_product()
        // Regular Price
        $regular_price = $precio_producto;

	// Sale Price (If you want to add any)
	//$sale_price = ;

	// Set the product ID of the product you want to change the price of
	$productID = 732;

	// Get product
        $product = wc_get_product($productID);

	// Set regular price
	$product->set_regular_price( $regular_price );

	// If your product has a Sale price
	if( $sale_price ) {
	$product->set_sale_price( $sale_price );
	$new_price = $sale_price;
	} else {
	$new_price = $regular_price;
				}
	// Set new price
	$product->set_price( $new_price );

	// Save to database (Note: You might want to clear cache of your page and then reload, if it still doesn't show up go to the product page and check there.)
	$product->save();
    }
}
do_action('get_header');