下载PDF功能可在某些页面上打印白页
I made a print function and it works on almost every page but on for example this page it prints 5 white pages?
It only shows the category and title on the first page, the content is coming after the 5th page. While other pages it is coming after the title and category. I can't find a solution can someone help me please?
Here is the code i generated to print PDF's on some pages.
function generate_project_pdf($postId){
$query = new WP_Query(array('post__in' => array($postId), 'post_type' => 'projecten', 'post_status' => 'publish'));
while($query->have_posts()){
$query->the_post();
ob_start();?>
<?php
$categories = get_the_terms($postId, 'Werkgebied');
$primaryCat = new WPSEO_Primary_Term('Werkgebied', $postId);
$primaryCat = $primaryCat->get_primary_term();
$primaryCatName = '';
$arOtherCateg = array();
foreach($categories as $category) {
if($primaryCat) {
if($primaryCat == $category->term_id){
$primaryCatName = $category->slug;
} else {
$arOtherCateg[] = $category->slug;
}
} else {
$arOtherCateg[] = $category->slug;
}
}
$terms1 = $arOtherCateg;
if($primaryCatName)
$terms1[] = $primaryCatName;
?>
<div class="wrapper">
<div class="content_block content_block_top" role="main">
<div class="cat_corner">
<table cellspacing="0" cellpadding="0">
<tr>
<?php foreach($terms1 as $category) { echo '<td class="'.$category.'"><div>'.$category . '</div></td>'; } ?>
</tr>
</table>
</div>
<article>
<div style="">
<p style="font-family: 'Open Sans';font-size: 45px; line-height: 50px;padding: 50px 0px 20px 0px; margin: 0px; color: #009fca;"><?php echo get_the_title($postId); ?></p>
</div>
<table width="100%" cellspacing="0" cellpadding="0">
<tr>
<td width="77%" valign="top" style="padding-right: 30px"><?php the_content(); ?></td>
<td style="padding-top: 25px;" valign="top">
<div class="projecten_info">
<div class="contactpersoon">
<?php if( get_post_meta($postId, 'profile_pic', true) ) { ?>
<img src="<?php echo get_field('profile_pic', $postId); ?>" alt="" />
<?php } ?>
<div class="h4">Contactpersoon</div>
<?php if( get_post_meta($postId, 'profile_name', true) ) { ?>
<p><?php echo get_field('profile_name', $postId); ?></p>
<?php } ?>
<?php if( get_post_meta($postId, 'profile_email', true) ) { ?>
<a href="mailto:<?php echo get_field('profile_email', $postId); ?>">mail</a>
<?php } ?>
</div><br>
<?php if( get_post_meta($postId, 'project_details', true) ) { ?>
<div class="details">
<div class="h4">Project details</div>
<?php echo get_field('project_details', $postId); ?>
</div>
<?php } ?>
</div>
</td>
</tr>
</table>
</article>
</div>
</div>
<?php if( have_rows('timeline', $postId) ): ?>
<!-- timeline -->
<div class="timeline">
<div class="wrapper">
<ul class="tab_select clear">
</ul>
<?php while( have_rows('timeline', $postId) ): the_row();
$date = get_sub_field('date');
$content = get_sub_field('content');
?>
<div class="tab_content" id="<?php echo $date; ?>">
<?php echo $content; ?>
</div>
<?php endwhile; ?>
</div>
</div>
<!-- /timeline -->
<?php endif; ?>
<?php if( have_rows('slider', $postId) ): ?>
<!-- slider -->
<div class="slider">
<ul class="clear">
<?php while( have_rows('slider', $postId) ): the_row();
$slide = get_sub_field('slide');
?>
<li data-cover=".cover"><img class="cover" src="<?php echo $slide; ?>" alt="" width="100%"/></li>
<?php break; endwhile; ?>
</ul>
</div>
<!-- /slider -->
<?php endif; ?>
<?php if( get_post_meta($postId, 'additional_content', true) ) { ?>
<div class="wrapper">
<!-- content_block -->
<div class="content_block">
<?php
$field = get_field('additional_content', $postId);
preg_match_all('/<img([^>])+>/', $field, $arMatches);
if(count($arMatches)) {
$img = $arMatches[0][0];
echo str_replace($img, '', $field).'<br>'.$img;
}
else
echo $field;
?>
</div>
<!-- /content_block -->
</div>
<?php } ?>
<?php
}
$html =
'<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<link rel="stylesheet" href="http://fonts.googleapis.com/css?family=Open+Sans:400,400italic,600,700" type="text/css" >
<style type="text/css">
@page { margin: 0px; }
body { margin: 0px; font: 16px \'Open Sans\', sans-serif; line-height: 1.3; color: #564f43;}
p { padding-bottom: 10px;}
.slider ul, .slider li {list-style: none; padding: 0px; margin: 0px;}
.wrapper { padding: 20px 30px 30px 30px;}
.content_block .cat_corner { position: absolute; top: 0; right: 0; font-size: 20px; color: #fff;}
.content_block .cat_corner div { margin-left: 10px; padding: 5px 15px;}
.content_block .cat_corner .infra div {background:#068dbd;}
.content_block .cat_corner .bagger div {background:#453d32;}
.content_block .cat_corner .milieutec div{background:#ffc900;color:#574f44;}
.content_block .cat_corner .groen div{background:#96c73c;}
.single-projecten .projecten > header { padding-bottom: 0px;}
.single-projecten .projecten_info { width: 100%;}
.single-projecten .projecten_info .contactpersoon { background: #f6f6f6; position: relative; padding: 20px 25px 10px 125px; margin-bottom: 10px;}
.single-projecten .projecten_info .contactpersoon img { position: absolute; top: 20px; left: 25px; width: 80px;}
div.h4 { font: 21px "Open Sans"; color: #009fca; padding-bottom: 0px;}
.single-projecten .projecten_info .contactpersoon h4 { padding-bottom: 0px; font: 21px "Open Sans"; color: #009fca;padding-top: 0px;}
.single-projecten .projecten_info .contactpersoon p { padding-bottom: 10px;}
.single-projecten .projecten_info .contactpersoon > a {text-align: right; color: #009fca; padding-right: 30px;
background: url('.THEME_URL.'/images/icons/arrow6.png) right center no-repeat; text-decoration: none;}
.single-projecten .projecten_info .details { background: #f6f6f6; position: relative; padding: 20px 25px 15px 25px; margin-bottom: 10px;}
.single-projecten .projecten_info .details p {padding-bottom: 10px;}
h2 { font: 33px "Open Sans"; padding-bottom: 20px;}
.content_block ul li.content_block ul, .content_block ul li {list-style: none;}
.content_block ul li { padding-left: 30px;background: url('.THEME_URL.'/images/icons/list_item.png) 0 5px no-repeat;}
.content_block ul li:nth-child(4n-2) {background-image: url('.THEME_URL.'/images/icons/list_item2.png);}
.content_block ul li:nth-child(4n-1) {background-image: url('.THEME_URL.'/images/icons/list_item3.png);}
.content_block ul li:nth-child(4n) {background-image: url('.THEME_URL.'/images/icons/list_item4.png);}
</style>
</head>
<body class="single-projecten">
'.ob_get_contents().'
</body>
</html>';
ob_end_clean();
include_once(get_template_directory().'/dompdf/dompdf_config.inc.php');
$dompdf = new DOMPDF();
$dompdf->set_paper('A4');
$dompdf->load_html($html);
$dompdf->render();
$output = $dompdf->output();
file_put_contents(get_template_directory() ."/pdfs/".$postId.".pdf", $output);
}
add_action("wp_ajax_generate_project_pdf", "download_project_pdf");
add_action("wp_ajax_nopriv_generate_project_pdf", "download_project_pdf");
function download_project_pdf() {
$postId = $_GET['id'];
if(!file_exists(get_template_directory() ."/pdfs/".$postId.".pdf"))
generate_project_pdf($postId);
header('Set-Cookie: fileDownload=true; path=/');
header('Cache-Control: max-age=60, must-revalidate');
header("Content-type: application/pdf");
header('Content-Disposition: attachment; filename="'.get_the_title($postId).'.pdf"');
readfile(get_template_directory() ."/pdfs/".$postId.".pdf");
exit;
}