SQL的问题,试试下面这个吧:$sql = "SELECT * FROM wp_posts m LEFT JOIN wp_term_relationships a ON m.ID = a.object_id LEFT JOIN wp_term_taxonomy b ON b.term_taxonomy_id=a.term_taxonomy_id WHERE 1 AND b.taxonomy = 'category' AND m.post_status = 'publish' AND m.post_type = 'post' AND b.term_id = '5' AND m.post_title like '%".$resault."%'";
SQL的问题,试试下面这个吧:$sql = "SELECT * FROM
wp_posts m
LEFT JOIN wp_term_relationships a ON m.ID = a.object_id
LEFT JOIN wp_term_taxonomy b ON b.term_taxonomy_id=a.term_taxonomy_id
WHERE 1
AND b.taxonomy = 'category'
AND m.post_status = 'publish'
AND m.post_type = 'post'
AND b.term_id = '5'
AND m.post_title like '%".$resault."%'";