How to Programmatically Change Yoast SEO Open Graph Meta | http://www.ibenic.com/programmatically-change-yoast-seo-open-graph-meta

desc.php

<?php

function change_yoast_seo_og_meta() {
   add_filter( 'wpseo_opengraph_desc', 'change_desc' );
}

function change_desc( $desc ) {
  
  // This article is actually a landing page for an eBook
  if( is_singular( 123 ) ) {
    $desc = __( 'The best eBook you can have on your laptop, tablet or smartphone. See what others are reading to improve their career.', 'change_textdomain');
  }
  
  return $desc;

}

hook.php

<?php

add_action( 'wpseo_opengraph', 'change_yoast_seo_og_meta' );

/**
* Function to add hooks and filter out the Yoast SEO Open Graph Meta Tags
*/
function change_yoast_seo_og_meta() {
  // We will add the code here to change the meta tags
}

image.php

<?php

function change_yoast_seo_og_meta() {
   add_filter( 'wpseo_opengraph_image', 'change_image' );
}

function change_image( $image ) {
  
  if( $image == 'http://url_for_image_to_change' ) {
    $image = 'http://url_to_our_new_image';
  }
  
  return $image;
}

images.php

<?php
function change_yoast_seo_og_meta() {
   add_action( 'wpseo_add_opengraph_images', 'add_images' );
}

function add_images( $object ) {
  $image = 'http://url_to_our_image.png';
  
  $object->add_image( $image );
}

locale.php

<?php

function change_yoast_seo_og_meta() {
   add_filter( 'wpseo_locale', 'change_locale' );
}

function change_locale( $locale ) {
  
  // Article with the ID 123 is Croatian
  // Other Articles are on English (or any site setting)
  if( is_singular( 123 ) ) {
    $locale = 'hr_HR';
  }
  
  return $locale;
  
}

og_tag.php

<?php

// Code from Yoast SEO Plugin
public function og_tag( $property, $content ) {
  $og_property = str_replace( ':', '_', $property );
  /**
   * Filter: 'wpseo_og_' . $og_property - Allow developers to change the content of specific OG meta tags.
   *
   * @api string $content The content of the property
   */
  $content = apply_filters( 'wpseo_og_' . $og_property, $content );
  if ( empty( $content ) ) {
    return false;
  }

  echo '<meta property="', esc_attr( $property ), '" content="', esc_attr( $content ), '" />', "\n";

  return true;
}

title.php

<?php

function change_yoast_seo_og_meta() {
   add_filter( 'wpseo_opengraph_title', 'change_title' );
}

function change_title( $title ) {
  
  // Landing Page eBook
  if( is_singular( 123 ) ) {
   
    $bought = get_bought_count_id( 123 );
    
    // Change the title if it was already sold to more than 100 
    if( $bought > 100 ) {
      $title = __( 'Get the eBook that was read by more than 100 people', 'change_textdomain' );
    }
  }
  
  return $title;

}

type.php

<?php

function change_yoast_seo_og_meta() {
   add_filter( 'wpseo_opengraph_type', 'change_type' );
}

function change_type( $type ) {
  
  // This article is actually a landing page for an eBook
  if( is_singular( 123 ) ) {
    $type = 'book';
  }
  
  return $type;

}

url.php

<?php

function change_yoast_seo_og_meta() {
   add_filter( 'wpseo_opengraph_url', 'change_url' );
}

function change_url( $url ) {
  
  // This article is actually a landing page for an eBook
  if( is_singular( 123 ) ) {
    $url = add_query_arg( 'from', 'facebook', $url );
  }
  
  return $url;

}

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