{"id":1495,"date":"2014-06-09T15:22:55","date_gmt":"2014-06-09T08:22:55","guid":{"rendered":"https:\/\/www.manpham.com\/?p=1495"},"modified":"2022-03-30T08:21:10","modified_gmt":"2022-03-30T01:21:10","slug":"tu-dong-lay-anh-dau-tien-cua-bai-viet-lam-anh-featured-image","status":"publish","type":"post","link":"https:\/\/www.manpham.com\/tu-dong-lay-anh-dau-tien-cua-bai-viet-lam-anh-featured-image.html","title":{"rendered":"T\u1ef1 \u0111\u1ed9ng l\u1ea5y \u1ea3nh \u0111\u1ea7u ti\u00ean c\u1ee7a b\u00e0i vi\u1ebft l\u00e0m \u1ea3nh featured image"},"content":{"rendered":"
C\u00f3 l\u1ebd nhi\u1ec1u b\u1ea1n ngh\u0129 r\u1eb1ng vi\u1ec7c set \u1ea3nh feature image l\u00e0 ph\u1ea3i v\u00e0o m\u1ee5c set feature \u1ea3nh \u0111\u1ec3 l\u00e0m \u1ea3nh \u0111\u1ea1i di\u1ec7n, nh\u01b0ng c\u00f3 m\u1ed9t s\u1ef1 th\u1eadt l\u00e0 kh\u00e1 nhi\u1ec1u b\u1ea1n r\u1ea5t l\u01b0\u1eddi l\u00e0m vi\u1ec7c n\u00e0y, m\u00ecnh c\u00f3 l\u00e0m m\u1ed9t v\u00e0i d\u1ef1 \u00e1n cho m\u1ed9t v\u00e0i c\u00f4ng ty, do s\u1ed1 l\u01b0\u1ee3ng b\u00e0i vi\u1ebft nhi\u1ec1u, h\u1ecd kh\u00e1 l\u01b0\u1eddi trong vi\u1ec7c set h\u00ecnh \u1ea3nh \u0111\u1ea1i di\u1ec7n n\u00e0y. V\u00ec th\u1ebf m\u00ecnh c\u00f3 m\u1ed9t v\u00e0i c\u00e1ch \u0111\u1ec3 h\u01b0\u1edbng d\u1eabn b\u1ea1n set t\u1ef1 \u0111\u1ed9ng h\u00ecnh \u1ea3nh n\u00e0y, b\u1eb1ng c\u00e1ch l\u1ea5y h\u00ecnh \u1ea3nh \u0111\u1ea7u ti\u00ean trong b\u00e0i vi\u1ebft \u0111\u1ec3 l\u00e0m h\u00ecnh \u1ea3nh \u0111\u1ea1i di\u1ec7n (featured image).<\/strong><\/p>\n <\/a><\/p>\n N\u1ed9i dung bài vi\u1ebft<\/p> V\u1edbi c\u00e1ch n\u00e0y b\u1ea1n c\u1ea7n ph\u1ea3i hi\u1ec3u bi\u1ebft m\u1ed9t v\u00e0i chi ti\u1ebft v\u1ec1 code c\u1ee7a WordPress. \u0110\u1ea7u ti\u00ean, b\u1ea1n m\u1edf file\u00a0functions.php\u00a0<\/strong>v\u00e0 ch\u00e8n code b\u00ean d\u01b0\u1edbi v\u00e0o d\u01b0\u1edbi code c\u1ee7a file ho\u1eb7c tr\u00ean c\u00f9ng c\u0169ng \u0111\u01b0\u1ee3c, mi\u1ec5n l\u00e0 b\u1ea1n hi\u1ec3u r\u1eb1ng code \u0111\u00e3 ho\u1ea1t \u0111\u1ed9ng (tr\u01b0\u1eddng h\u1ee3p sau khi ch\u00e8n website b\u1ecb tr\u1eafng b\u00f3c ngh\u0129a l\u00e0 b\u1ea1n ch\u00e8n kh\u00f4ng \u0111\u00fang ch\u1ed7)<\/p>\n function catch_that_image() { if(empty($first_img)){ \/\/Defines a default image Trong \u0111\u00f3 \/images\/default.jpg<\/strong> l\u00e0 \u0111\u01b0\u1eddng d\u1eabn t\u1edbi \u1ea3nh m\u1eb7c \u0111\u1ecbnh n\u1ebfu kh\u00f4ng t\u00ecm th\u1ea5y \u1ea3nh tr\u00ean b\u00e0i vi\u1ebft.<\/p>\n Cu\u1ed1i c\u00f9ng b\u1ea1n v\u00e0o index.php v\u00e0 content.php (n\u1ebfu trong b\u00e0i vi\u1ebft c\u00f3 \u1ea3nh thumb) \u0111\u1ec3 th\u00eam \u0111o\u1ea1n code n\u00e0y v\u00e0o<\/p>\n V\u1eady l\u00e0 xong, \u01b0u \u0111i\u1ec3m c\u1ee7a c\u00e1ch n\u00e0y l\u00e0 g\u1ecdn nh\u1eb9, kh\u00f4ng c\u1ea7n s\u1eed d\u1ee5ng th\u00eam plugin, nh\u01b0ng nh\u01b0\u1ee3c \u0111i\u1ec3m l\u00e0 th\u01b0\u1eddng c\u00f3 m\u1ed9t s\u1ed1 b\u1ea1n l\u00e0m kh\u00f4ng \u0111\u01b0\u1ee3c, v\u00ec th\u1ebf m\u00ecnh s\u1ebd gi\u1edbi thi\u1ec7u th\u00eam c\u00e1ch 2<\/p>\n \u0110\u1ecdc th\u00eam :\u00a0T\u1ea1o ch\u1ebf \u0111\u1ed9 K\u00e9o v\u00e0 th\u1ea3 khi th\u00eam h\u00ecnh \u1ea3nh featured<\/a><\/p><\/blockquote>\n Plugin n\u00e0y r\u1ea5t d\u1ec5 s\u1eed d\u1ee5ng, khi b\u1ea1n th\u00eam plugin n\u00e0y v\u00e0o, vi\u1ec7c b\u1ea1n l\u00e0m l\u00e0 kh\u00f4ng g\u00ec c\u1ea3, n\u00f3 t\u1ef1 \u0111\u1ed9ng t\u00ecm t\u1edbi \u0111\u01b0\u1eddng d\u1eabn \u1ea3nh \u0111\u1ea7u ti\u00ean c\u1ee7a b\u00e0i vi\u1ebft v\u00e0o set v\u00e0o featured image.<\/p>\n Plugin n\u00e0y ho\u1ea1t \u0111\u1ed9ng c\u0169ng g\u1ea7n gi\u1ed1ng plugin tr\u00ean, c\u00e1ch ho\u1ea1t \u0111\u1ed9ng v\u00f4 c\u00f9ng \u0111\u01a1n gi\u1ea3n, b\u1ea1n kh\u00f4ng c\u1ea7n c\u1ea5u h\u00ecnh g\u00ec nh\u01b0ng plugin v\u1eabn ho\u1ea1t \u0111\u1ed9ng r\u1ea5t \u1ed5n \u0111\u1ecbnh<\/p>\n Plugin n\u00e0y d\u00e0nh cho nh\u1eefng b\u1ea1n \u0111ang mu\u1ed1n l\u00e0m trang video, \u0111\u1ec3 gi\u00fap cho ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 post video v\u1edbi t\u1ed1c \u0111\u1ed9 nhanh, h\u1ed7 tr\u1ee3 t\u1ea5t c\u1ea3 c\u00e1c trang video l\u1edbn tr\u00ean th\u1ebf gi\u1edbi. Ch\u1ec9 c\u1ea7n t\u00ecm th\u1ea5y video ho\u1ea1t \u0111\u1ed9ng trong b\u00e0i vi\u1ebft, plugin n\u00e0y t\u1ef1 \u0111\u1ed9ng b\u1eaft l\u1ea5y h\u00ecnh \u1ea3nh thumbnails c\u1ee7a video l\u00e0m \u1ea3nh featured image cho b\u00e0i vi\u1ebft \u0111\u00f3<\/p>\n L\u01b0u \u00fd: Plugin ho\u1eb7c code ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t n\u1ebfu h\u00ecnh \u1ea3nh \u0111\u00f3 n\u1eb1m tr\u00ean host c\u1ee7a b\u1ea1n, n\u1ebfu b\u1ea1n d\u00f9ng link ngo\u00e0i th\u00ec c\u1ea7n c\u1ea5u h\u00ecnh l\u1ea1i m\u1ed9t ch\u00fat, m\u00ecnh s\u1ebd d\u00e0nh th\u1eddi gian \u0111\u00f3 cho m\u1ed9t b\u00e0i vi\u1ebft kh\u00e1c<\/p>\n \u0110\u00e2y ch\u1ec9 l\u00e0 m\u1ed9t v\u00e0i th\u1ee7 thu\u1eadt nho nh\u1ecf \u0111\u1ec3 gi\u00fap b\u1ea1n l\u00e0m ch\u1ee7 \u1ea3nh featured image c\u1ee7a wordpress, n\u1ebfu b\u1ea1n v\u1eabn mu\u1ed1n l\u00e0m cho blog phong ph\u00fa h\u01a1n th\u00ec b\u1ea1n n\u00ean set b\u1eb1ng tay. C\u00e1ch n\u00e0y d\u00f9ng cho nh\u1eefng c\u00f4ng ty kh\u00f4ng c\u00f3 th\u1eddi gian \u0111\u1ec3 l\u1ef1a ch\u1ecdn m\u1ed9t h\u00ecnh \u1ea3nh kh\u00e1c<\/p>\n\n\nT\u1ef1 \u0111\u1ed9ng l\u1ea5y \u1ea3nh \u0111\u1ea7u ti\u00ean c\u1ee7a b\u00e0i vi\u1ebft l\u00e0m \u1ea3nh featured image<\/span><\/h2>\n
C\u00e1ch 1: s\u1eed d\u1ee5ng code<\/span><\/h3>\n
\nglobal $post, $posts;
\n$first_img = ”;
\nob_start();
\nob_end_clean();
\n$output = preg_match_all(‘\/<img.+src=[\\'”]([^\\'”]+)[\\'”].*>\/i’, $post->post_content, $matches);
\n$first_img = $matches [1] [0];<\/p>\n
\n$first_img = “\/images\/default.jpg”; \/\/Duong dan anh mac dinh khi khong tim duoc anh dai dien
\n}
\nreturn $first_img;
\n}<\/p>\n<\/div><\/div>\nC\u00e1ch 2: s\u1eed d\u1ee5ng plugin<\/span><\/h3>\n
Auto Post Thumbnail<\/a><\/span><\/h4>\n
Autoset Featured Image<\/a><\/span><\/h4>\n
Video Thumbnails<\/a><\/span><\/h4>\n
L\u1eddi k\u1ebft<\/span><\/h2>\n