WordPress中用于获取及自定义头像图片的PHP脚本详

get_avatar( $id_or_email, $size, $default, $alt );

<?php echo get_avatar( $GLOBALS['ment'] ); ?>

<?php echo get_avatar( get_the_author_meta( 'ID' ), 32 ); ?>

<?php echo get_avatar( 'email@example.', 32, '', '自定义邮箱' ); ?>

/
  WordPress 自定义头像图片的 alt 标签
  根据不同的人生成不同的 alt 标签
  http://.endskin./avatar-alt/
/
function Bing_avatar_alt( $avatar ){
  $alt = 'Gravatar 头像';//alt 标签的内容
  $before = strpos( $avatar, "alt='" );
  $after = strpos( $avatar, "'", $before );
  if( $before === false || $after === false ) return $avatar;
  $alt = esc_attr( $alt );
  return substr( $avatar, 0, $before ) . "alt='$alt" . substr( $avatar, $after + strlen( "'" ) );
}
add_filter( 'get_avatar', 'Bing_avatar_alt' );

/
  WordPress 自定义头像图片的 alt 标签
  http://.endskin./avatar-alt/
/
function Bing_avatar_alt( $avatar, $id_or_email ){
  if( $id_or_email == 'bingoblog@163.' || $id_or_email === 1 ){
    $alt = '博主 Gravatar 头像';//博主的 alt 标签内容
  }else{
    $alt = 'Gravatar 头像';//普通访客的 alt 标签内容
  }
  $before = strpos( $avatar, "alt='" );
  $after = strpos( $avatar, "'", $before );
  if( $before === false || $after === false ) return $avatar;
  $alt = esc_attr( $alt );
  return substr( $avatar, 0, $before ) . "alt='$alt" . substr( $avatar, $after + strlen( "'" ) );
}
add_filter( 'get_avatar', 'Bing_avatar_alt', 10, 2 );

/
  WordPress 自定义头像图片的 alt 标签
  如果已经设置 alt 标签则不替换
  http://.endskin./avatar-alt/
/
function Bing_avatar_alt( $avatar, $id_or_email, $size, $default, $alt ){
  if( !empty( $alt ) ) return $avatar;
  $alt = 'Gravatar 头像';//alt 标签的内容
  $before = strpos( $avatar, "alt='" );
  $after = strpos( $avatar, "'", $before );
  if( $before === false || $after === false ) return $avatar;
  $alt = esc_attr( $alt );
  return substr( $avatar, 0, $before ) . "alt='$alt" . substr( $avatar, $after + strlen( "'" ) );
}
add_filter( 'get_avatar', 'Bing_avatar_alt', 10, 5 );