You’ve probably seen the following encoded URL before like this:
//0.gravatar.com/avatar/d5279c8b66d25549a0ec3c8dd46a3d1a?s=120This URL enables you to link to a Gravatar image using the encoded email address of the Gravatar account. However, you need to MD5 hash the email address for the Gravatar account to get the hash.
All Gravatar URL’s are based on the use of the hashed value of an email address.
To create a hash, follow these 3 simple steps:
- Trim leading and trailing whitespace from an email address
- Force all characters to lower-case
- md5 hash the final string
You can then use the hash to request the image using code like this:
add_action( 'loop_start', 'print_gravatar_image' );
function print_gravatar_image() {
$gravatar = '//0.gravatar.com/avatar/d5279c8b66d25549a0ec3c8dd46a3d1a?s=180';
printf( '<img src="%s" />', esc_url( $gravatar ) );
}Or like this in a template file for default themes like Twenty Sixteen.
<?php
$gravatar = '//0.gravatar.com/avatar/d5279c8b66d25549a0ec3c8dd46a3d1a?s=180';
printf( '<img src="%s" />', esc_url( $gravatar ) );
}
?>