Jill 筆記 - 線上書籍

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PHP 從頭說
=======

```php
<?php
require_once 'header.php';

$today = date("Y-m-d");
$smarty->assign('now', $today);

/****************** 函數區****************/
//列出所有
function list_all(){
    global $db;
    //查詢語法
    $sql="SELECT * FROM `list` order by end" ;
    $result=$db->query($sql);
    // 有錯誤輸出錯誤
    if(!$result){
        throw new Exception($db->error);
    }
    // 讀出資料
    // 法一(以資料表欄位為索引)
    // while ($data= $result->fetch_assoc()) {
    //     $content[]=$data;
    // }
    // 法二(以資料表欄位順序為索引)--不建議
    // while ($data= $result->fetch_row()) {
    //     $content[]=$data;
    // }
    // 法三
    $i=0;
    while (list($sn,$title,$directions,$end,$priority,$assign,$done,$create_time,$update_time)= $result->fetch_row()) {
        $content[$i]['sn']          = $sn;
        $content[$i]['title']       = $title;
        $content[$i]['directions']  = $directions;
        $content[$i]['end']         = $end;
        $content[$i]['priority']    = $priority;
        $content[$i]['assign']      = $assign;
        $content[$i]['done']        = $done;
        $content[$i]['create_time'] = $create_time;
        $content[$i]['update_time'] = $update_time;
        // $i=$i+1;
        $i++;
    }
    // print_r($content);
    // die(var_dump($content));
    return $content;
}

// 表單函數
function post_form(){
    global $smarty;
    $content=[
        'title'=>'',
        'directions'=>'',
        'end' => date("Y-m-d",strtotime("+7 day")),
        'priority'=> "高",
        'assign'=>['李大頭'],
        'done' => 0,
    ];

$next_op='add';
    $smarty->assign('next_op', $next_op);
    return $content;
}

// 新增資料
function add(){
    global $db;

$title  = $db->real_escape_string($_POST['title']);
    $directions=$db->real_escape_string($_POST['directions']);
    $end=$db->real_escape_string($_POST['end']);
    $priority=$db->real_escape_string($_POST['priority']);
    $assign=implode(';',$_POST['assign']);
    $done=intval($_POST['done']);

$sql = "INSERT INTO `list` ( `title`, `directions`, `end`, `priority`, `assign`, `done`,`create_time`,`update_time`)
    VALUES ('{$title}', '{$directions}', '{$end}', '{$priority}', '{$assign}', '{$done}',now(),now())";

if(!$db->query($sql)){
        throw new Exception($db->error);
    }

$sn=$db->insert_id;
    return $sn;

}
/***********************流程判斷************************/
$op=isset($_REQUEST['op'])?$_REQUEST['op']:'';

switch ($op) {
    case 'add':
        $sn=add();
        // 轉向
        // header("location:index.php?sn={$sn}");
        echo "<script>alert('新增成功');location.href='index.php?sn={$sn}';</script>";
        exit;
    case 'post_form':
        $content=post_form();
        break;

default:
        $content=list_all();
        break;
}

$smarty->assign('op', $op);

/***********************頁尾************************/
require_once 'footer.php';
```

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