小编Sha*_*aun的帖子

我需要有关symfony 2.0的教程.

任何链接或建议将不胜感激.

注意:我对Jobeet教程有一点了解,并且没有在symfony上开发完整的项目.

我有以下json对象,我需要通过javascript提醒它.

{data:[{"empmenuid":"1","empid":null,"deptid":"66","aliasid":"66","firstname":"66","lastname":"66","sin":"66","status":"66","empclass":"66","hiredate":"66","seneoritydate":"66","separationdate":"66","recalldate":"66","martialstatus":"66","gender":"66","ethinicorigin":"66","ethinicsuborigin":"66","nationality":"66","address1":"66","address2":"66","city":"66","province":"66","postalcode":"66","country":"66","email":"66","officialemail":"66","phone":"66","otherphone":"66","fax":"66","officephone":"66","officeext":"66","officefax":"66","mobilephone":"66","pager":"66","locid":"66","jobtitle":"66","jobtitlestart":"66","fullpart":"66","manager":"66","managername":"66","middlename":"66","nickname":"66","paytype":"66","payfreq":"66"},{"empmenuid":"3","empid":null,"deptid":"12","aliasid":"12","firstname":"12","lastname":"12","sin":"12","status":"12","empclass":"12","hiredate":"12","seneoritydate":"12","separationdate":"12","recalldate":"12","martialstatus":"12","gender":"12","ethinicorigin":"12","ethinicsuborigin":"12","nationality":"12","address1":"12","address2":"12","city":"121","province":"12","postalcode":"12","country":"12","email":"12","officialemail":"12","phone":"12","otherphone":"12","fax":"12","officephone":"12","officeext":"12","officefax":"12","mobilephone":"12","pager":"12","locid":"12","jobtitle":"12","jobtitlestart":"12","fullpart":"12","manager":"12","managername":"12","middlename":"12","nickname":"12","paytype":"12","payfreq":"12"}],
recordType : 'object'}

我的表中有一列数据类型为TEXT.

我怎样才能给它一个默认NULL值,这样当列中没有条目时它就不会占用内存.

我正在一个论坛上阅读类似的问题,他们说列应该被允许为空值; 我这样做但它不起作用..

是否可以通过JS或Javascript强制下载,即网页不应该在浏览器的新选项卡中打开文件,而是弹出让用户选择"另存为"或打开???

如何在10秒后关闭jquery模态框???

我使用以下脚本来调用onload函数,但它在IE中不起作用

("#body").attr({onload : "calFact();"});

我从教程Tutorial中安装了symfony .安装正常,它显示了欢迎页面,但是当我点击configure your symfony app它时出现以下错误 Fatal error: Class 'Symfony\Component\DependencyInjection\Compiler\ResolveDefinitionTemplatesPass' not found in C:\xampp\htdocs\Symfony\vendor\symfony\src\Symfony\Component\DependencyInjection\Compiler\PassConfig.php on line 48

我需要知道PHP是否存在可变限制大小.我从SQL数据库中获取字符串字段并使用echo它在网页上查看它.我遇到的问题是,当我查看网页时,我看不到数据库字段中的所有内容.PHP变量可以有多少限制？有没有办法让PHP从数据库中读取整个条目而不是中途停止？

$data = 'iVBORw0KGgoAAAANSUhEUgAAABwAAAASCAMAAAB/2U7WAAAABl'
      . 'BMVEUAAAD///+l2Z/dAAAASUlEQVR4XqWQUQoAIAxC2/0vXZDr'
      . 'EX4IJTRkb7lobNUStXsB0jIXIAMSsQnWlsV+wULF4Avk9fLq2r'
      . '8a5HSE35Q3eO2XP1A1wQkZSgETvDtKdQAAAABJRU5ErkJggg==';
$data = base64_decode($data);

$im = imagecreatefromstring($data);
if ($im !== false) {

    header("Cache-Control: no-cache, must-revalidate");
    header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
    header('Content-Type: image/png');
    imagepng($im);

    //echo '<a href=\'imagepng('.$im.')\'> Download </a>';
    echo "-----------------";

} else {
    echo 'An error occurred.';
}

它显示图像但不回显"==============".

我已经将一个JSON对象传递给symfony2中的twig模板,然后我将对象分配给了JavaScript变量.

我的目标就像

[{"data":"{"params":{"id":"1","width":"98","height":"101","x":"151","y" ....

现在,当我提醒对象它显示上面的对象array(),这是好的,但当我提醒object.data它什么都没有显示.

谢谢