globals

Save something to global var in add_filter

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I ran a test and the following works: global $testMe; $testMe = 0; function my_acf_update_value( $value, $post_id, $field ) { global $testMe; $testMe = $value; return $value; } add_filter(‘acf/update_value/key=field_5308e5e79784b’, ‘my_acf_update_value’, 10, 3); // Test: Apply the filter apply_filters(‘acf/update_value/key=field_5308e5e79784b’,’a’,’b’,’c’); // end Test echo $testMe; // prints ‘a’ So, in principle, your code is functional. There are … Read more

How to set global variable in functions.php

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You can turn your snippet into a function that returns the post thumbnail URL of a post: function wpse81577_get_small_thumb_url( $post_id ) { $thumbSmall = wp_get_attachment_image_src( get_post_thumbnail_id( $post_id ), ‘small’ ); return $thumbSmall[‘0’]; } Usage, supplying the ID of a post: <?php echo wpse81577_get_small_thumb_url( 59 ); ?>