php获取数据库表的相关信息，

1：获取表注释

show 

table

status 

like

表名
读取表名和注释

$sql   = sprintf("show table status like '%s'", $table);$stmt  = $dbh->prepare($sql);$stmt->execute();$results = $stmt->fetchAll(PDO::FETCH_ASSOC);if(!empty($results)) {if($results[0]['Name'] == $table){$sComment = $results[0]['Comment'];}}

2：字段名，字段类型，注释等

$sql   = sprintf('SHOW FULL COLUMNS FROM %s', $table);$stmt  = $dbh->prepare($sql);$stmt->execute();$results = $stmt->fetchAll(PDO::FETCH_ASSOC);$fields  = array();foreach ($results as $row) {if (in_array($row['Field'], $filter_columns)) {continue;}$fields[$row['Field']]['fieldName'] = $row['Field'];$length = strpos($row['Type'],'(');if($length === false) {$length = strlen($row['Type']);}$val_type = substr($row['Type'], 0, $length);$fields[$row['Field']]['Type'] = field_format($val_type);$fields[$row['Field']]['Comment'] = $row['Comment'];}