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我得到以下警告時，試圖從遠程服務器查看list_of_holidays.pdf PDF文件：CakePHP的tcpd的錯誤：有些數據已經被輸出到瀏覽器，無法發送遠程服務器
Warning (2): Cannot modify header information - headers already sent by (output started
at /home/aquinto1/app/views/helpers/flash.php:155) [APP/vendors/tcpdf/tcpdf.php, line 8541]
TCPDF ERROR: Some data has already been output to browser, can't send PDF file
第155行是flash.php中的最後一行，即php（？>）的結束標記。在此之前，它是嵌入SWF的代碼。我沒有看到任何問題。
但是，它在本地服務器上顯示正常。
我檢查過空格，但錯誤仍然存在。
我已經在輸出之前使用ob_clean。
有人可以告訴我我做錯了什麼。僅供參考，我使用的是帶有tcpdf的cakephp。
以下是flash.php
class FlashHelper extends AppHelper {
var $helpers = array('Javascript');
/**
* Used for remembering options from init() to each renderSwf
*
* @var array
*/
var $options = array(
'width' => 100,
'height' => 100
);
/**
* Used by renderSwf to set a flash version requirement
*
* @var string
*/
var $defaultVersionRequirement = '9.0.0';
/**
* Used by renderSwf to only call init if it hasnt been done, either
* manually or automatically by a former renderSwf()
*
* @var boolean
*/
var $initialized = false;
/**
* Optional initializing for setting default parameters and also includes the
* swf library. Should be called once, but if using several groups of flashes,
* MAY be called several times, once before each group.
*
* @example echo $flash->init();
* @example $flash->init(array('width'=>200,'height'=>100);
* @return mixed String if it was not able to add the script to the view, true if it was
*/
function init($options = array()) {
if (!empty($options)) {
$this->options = am($this->options, $options);
}
$this->initialized = true;
$view =& ClassRegistry::getObject('view');
if (is_object($view)) {
$view->addScript($this->Javascript->link('swfobject'));
return true;
} else {
return $this->Javascript->link('swfobject');
}
}
/**
* Wrapper for the SwfObject::embedSWF method in the vendor. This method will write a javascript code
* block that calls that javascript method. If given a dom id as fourth parameter the flash will
* replace that dom object. If false is given, a div will be placed at the point in the
* page that this method is echo'ed. The last parameter is mainly used for sending in extra settings to
* the embedding code, like parameters and attributes. It may also send in flashvars to the flash.
*
* For doucumentation on what options can be sent, look here:
* http://code.google.com/p/swfobject/wiki/documentation
*
* @example echo $flash->renderSwf('counter.swf'); // size set with init();
* @example echo $flash->renderSwf('flash/ad.swf',100,20);
* @example echo $flash->renderSwf('swf/banner.swf',800,200,'banner_ad',array('params'=>array('wmode'=>'opaque')));
* @param string $swfFile Filename (with paths relative to webroot)
* @param int $width if null, will use width set by FlashHelper::init()
* @param int $height if null, will use height set by FlashHelper::init()
* @param mixed $divDomId false or string : dom id
* @param array $options array('flashvars'=>array(),'params'=>array('wmode'=>'opaque'),'attributes'=>array());
* See SwfObject documentation for valid options
* @return string
*/
function renderSwf($swfFile, $width = null, $height = null, $divDomId = false, $options = array()) {
$options = am ($this->options, $options);
if (is_null($width)) {
$width = $options['width'];
}
if (is_null($height)) {
$height = $options['height'];
}
$ret = '';
if (!$this->initialized) {
$init = $this->init($options);
if (is_string($init)) {
$ret = $init;
}
$this->initialized = TRUE;
}
$flashvars = '{}';
$params = '{wmode : "opaque"}';
$attributes = '{}';
if (isset($options['flashvars'])) {
$flashvars = $this->Javascript->object($options['flashvars']);
}
if (isset($options['params'])) {
$params = $this->Javascript->object($options['params']);
}
if (isset($options['attributes'])) {
$attributes = $this->Javascript->object($options['attributes']);
}
if ($divDomId === false) {
$divDomId = uniqid('c_');
$ret .= '<div id="'.$divDomId.'"></div>';
}
if (isset($options['version'])) {
$version = $options['version'];
} else {
$version = $this->defaultVersionRequirement;
}
if (isset($options['install'])) {
$install = $options['install'];
} else {
$install = '';
}
$swfLocation = $this->webroot.$swfFile;
$ret .= $this->Javascript->codeBlock(
'swfobject.embedSWF
("'.$swfLocation.'", "'.$divDomId.'", "'.$width.'", "'.$height.'", "'.$version.'",
"'.$install.'", '.$flashvars.', '.$params.', '.$attributes.');');
return $ret;
}
}
?>
行155是flash.php的最後一行，即php（？>）的結束標記。在此之前，它是嵌入SWF的代碼。我沒有看到任何問題。 – vaanipala 2012-03-22 06:25:29