php - 如何在php中回显循环并将其放入变量中？

Question

您好，我在将数据从 php 发送到 pdf 时遇到了问题。我认为唯一的方法是将要发送到 pdf 函数的数据放入变量中。这是我需要放入 php 变量中的代码..

<table width="95%" height="95%">
            <tr>
                <td align="center">
                  <table width="100%" border="0" cellpadding="2" cellspacing="2">
                    <tr align="center">
                      <td colspan="7" bgcolor="#2561cf" style="color:#FFFFFF"><strong><?php echo $monthNames[$cMonth-1].' '.$cYear; ?></strong></td>
                    </tr>
                    <tr>
                      <td align="center" bgcolor="#2561cf" style="color:#FFFFFF"><strong>Sun</strong></td>
                      <td align="center" bgcolor="#2561cf" style="color:#FFFFFF"><strong>Mon</strong></td>
                      <td align="center" bgcolor="#2561cf" style="color:#FFFFFF"><strong>Tue</strong></td>
                      <td align="center" bgcolor="#2561cf" style="color:#FFFFFF"><strong>Wed</strong></td>
                      <td align="center" bgcolor="#2561cf" style="color:#FFFFFF"><strong>Thu</strong></td>
                      <td align="center" bgcolor="#2561cf" style="color:#FFFFFF"><strong>Fri</strong></td>
                      <td align="center" bgcolor="#2561cf" style="color:#FFFFFF"><strong>Sat</strong></td>
                    </tr>

                    <?php 
                        $timestamp = mktime(0,0,0,$cMonth,1,$cYear);
                        $maxday    = date("t",$timestamp);
                        $thismonth = getdate ($timestamp);
                        $startday  = $thismonth['wday'];

                      for ($i=0; $i<($maxday+$startday); $i++) {
                        $day = ($i - $startday + 1);
                        if($day['1'] == '1' || $day['1'] == '2' || $day['1'] == '3' || $day['1'] == '4' || $day['1'] == '5' || $day['1'] == '6' || $day['1'] == '7' || $day['1'] == '8' || $day['1'] == '9'){
                            $day    = '0'.$day;
                        }else{
                            $day    = $day;
                        }
                        $date = $monthNames[$cMonth-1].' '.$day.', '.$cYear;
                        $date2 = $cMonth.'/'.$day.'/'.$cYear;
                        $events = $this->getEvents($date2);
                        if(($i % 7) == 0 ) echo "<tr>\n";
                        if($i < $startday) echo "<td></td>\n";
                        else echo "<td valign='top' align='left' width='50px' height='50px'><div class='".$dateId."' id='".$date."' title='".$date2."' style='cursor:pointer;'>". ($i - $startday + 1) .'</div>'. $events."</td>\n";
                        if(($i % 7) == 6 ) echo "</tr>\n";
                      }  
                     ?>
                  </table>
                </td>
            </tr>
         </table>

Answer 1

如果您有大量的 HTML/PHP 并且您需要将输出存储在变量中而不是打印到屏幕上，您可以使用 output buffering使这变得容易的功能:

<?php
ob_start(); // Start the buffer (nothing will be output)
?>

<p>Lots and lots of mixed <?php echo 'HTML'; ?> and PHP...</p>

<?php
$content = ob_get_clean(); // End the buffer and assign everything to $content
?>