我有一份分类为列表的PDF文件列表。
像这样：
Terms:
PDF1.pdf
PDF2.pdf
Conditions:
PDF1.pdf
PDF3.pdf
所以我首先循环所有类别以在我的页面上显示类别的标题，并在该循环中我循环pdf文件URL（仅用于测试目的，最终代码将获得锚标记等）。
问题是我的代码显示所有标题上的所有pdf文件。不仅仅是属于他们的pdf文件。我究竟做错了什么？每次循环后我是否需要清空$attach？
我的代码：
foreach($manualcr as $mantitle){
if($mantitle['id'] != ''){
$attachoverzicht .= '<h3>'.$mantitle['title'].'</h3>';
foreach($manucr as $attach){
if($attach['id'] != ''){
$attachoverzicht .= '<li>'.$attach['url'].'</li>';
}
}
}
}
echo $attachoverzicht;
$manualcr包含所有类别标题，manucr包含所有pdf数据。
$manualcr的var转储结果在这里
array(3) {
[0]=>
array(30) {
["id"]=>
string(3) "182"
["asset_id"]=>
string(3) "299"
["title"]=>
string(18) "Terms & Conditions"
["alias"]=>
string(16) "terms-conditions"
["introtext"]=>
string(0) ""
["fulltext"]=>
string(0) ""
["state"]=>
string(1) "1"
["catid"]=>
string(2) "42"
["created"]=>
string(19) "2017-02-16 13:54:45"
["created_by"]=>
string(3) "360"
["created_by_alias"]=>
string(0) ""
["modified"]=>
string(19) "2017-02-16 13:56:43"
["modified_by"]=>
string(3) "360"
["checked_out"]=>
string(1) "0"
["checked_out_time"]=>
string(19) "0000-00-00 00:00:00"
["publish_up"]=>
string(19) "2017-02-16 13:54:45"
["publish_down"]=>
string(19) "0000-00-00 00:00:00"
["images"]=>
string(173) "{"image_intro":"","float_intro":"","image_intro_alt":"","image_intro_caption":"","image_fulltext":"","float_fulltext":"","image_fulltext_alt":"","image_fulltext_caption":""}"
["urls"]=>
string(121) "{"urla":false,"urlatext":"","targeta":"","urlb":false,"urlbtext":"","targetb":"","urlc":false,"urlctext":"","targetc":""}"
["attribs"]=>
string(593) "{"show_title":"","link_titles":"","show_tags":"","show_intro":"","info_block_position":"","show_category":"","link_category":"","show_parent_category":"","link_parent_category":"","show_author":"","link_author":"","show_create_date":"","show_modify_date":"","show_publish_date":"","show_item_navigation":"","show_icons":"","show_print_icon":"","show_email_icon":"","show_vote":"","show_hits":"","show_noauth":"","urls_position":"","alternative_readmore":"","article_layout":"","show_publishing_options":"","show_article_options":"","show_urls_images_backend":"","show_urls_images_frontend":""}"
["version"]=>
string(1) "2"
["ordering"]=>
string(1) "0"
["metakey"]=>
string(0) ""
["metadesc"]=>
string(0) ""
["access"]=>
string(1) "1"
["hits"]=>
string(1) "0"
["metadata"]=>
string(53) "{"robots":"","author":"","rights":"","xreference":""}"
["featured"]=>
string(1) "0"
["language"]=>
string(1) "*"
["xreference"]=>
string(0) ""
}
[1]=>
array(30) {
["id"]=>
string(3) "181"
["asset_id"]=>
string(3) "298"
["title"]=>
string(8) "Shackles"
["alias"]=>
string(8) "shackles"
["introtext"]=>
string(0) ""
["fulltext"]=>
string(0) ""
["state"]=>
string(1) "1"
["catid"]=>
string(2) "42"
["created"]=>
string(19) "2017-02-16 13:54:31"
["created_by"]=>
string(3) "360"
["created_by_alias"]=>
string(0) ""
["modified"]=>
string(19) "2017-02-16 13:57:00"
["modified_by"]=>
string(3) "360"
["checked_out"]=>
string(1) "0"
["checked_out_time"]=>
string(19) "0000-00-00 00:00:00"
["publish_up"]=>
string(19) "2017-02-16 13:54:31"
["publish_down"]=>
string(19) "0000-00-00 00:00:00"
["images"]=>
string(173) "{"image_intro":"","float_intro":"","image_intro_alt":"","image_intro_caption":"","image_fulltext":"","float_fulltext":"","image_fulltext_alt":"","image_fulltext_caption":""}"
["urls"]=>
string(121) "{"urla":false,"urlatext":"","targeta":"","urlb":false,"urlbtext":"","targetb":"","urlc":false,"urlctext":"","targetc":""}"
["attribs"]=>
string(593) "{"show_title":"","link_titles":"","show_tags":"","show_intro":"","info_block_position":"","show_category":"","link_category":"","show_parent_category":"","link_parent_category":"","show_author":"","link_author":"","show_create_date":"","show_modify_date":"","show_publish_date":"","show_item_navigation":"","show_icons":"","show_print_icon":"","show_email_icon":"","show_vote":"","show_hits":"","show_noauth":"","urls_position":"","alternative_readmore":"","article_layout":"","show_publishing_options":"","show_article_options":"","show_urls_images_backend":"","show_urls_images_frontend":""}"
["version"]=>
string(1) "2"
["ordering"]=>
string(1) "1"
["metakey"]=>
string(0) ""
["metadesc"]=>
string(0) ""
["access"]=>
string(1) "1"
["hits"]=>
string(1) "0"
["metadata"]=>
string(53) "{"robots":"","author":"","rights":"","xreference":""}"
["featured"]=>
string(1) "0"
["language"]=>
string(1) "*"
["xreference"]=>
string(0) ""
}
[2]=>
NULL
}
以及$manucr
array(4) {
[0]=>
array(26) {
["id"]=>
string(1) "1"
["filename"]=>
string(13) "dummy_pdf.pdf"
["filename_sys"]=>
string(71) "/home/website/public_html/cms/attachments/article/182/dummy_pdf.pdf"
["file_type"]=>
string(15) "application/pdf"
["file_size"]=>
string(5) "16555"
["url"]=>
string(37) "attachments/article/182/dummy_pdf.pdf"
["uri_type"]=>
string(4) "file"
["url_valid"]=>
string(1) "0"
["url_relative"]=>
string(1) "0"
["url_verify"]=>
string(1) "0"
["display_name"]=>
string(9) "Test naam"
["description"]=>
string(0) ""
["icon_filename"]=>
string(7) "pdf.gif"
["access"]=>
string(1) "2"
["state"]=>
string(1) "0"
["user_field_1"]=>
string(0) ""
["user_field_2"]=>
string(0) ""
["user_field_3"]=>
string(0) ""
["parent_type"]=>
string(11) "com_content"
["parent_entity"]=>
string(7) "article"
["parent_id"]=>
string(3) "182"
["created"]=>
string(19) "2017-02-16 13:56:03"
["created_by"]=>
string(3) "360"
["modified"]=>
string(19) "2017-02-16 13:56:03"
["modified_by"]=>
string(3) "360"
["download_count"]=>
string(1) "0"
}
[1]=>
array(26) {
["id"]=>
string(1) "2"
["filename"]=>
string(14) "dummy_pdf1.pdf"
["filename_sys"]=>
string(72) "/home/website/public_html/cms/attachments/article/182/dummy_pdf1.pdf"
["file_type"]=>
string(15) "application/pdf"
["file_size"]=>
string(5) "16555"
["url"]=>
string(38) "attachments/article/182/dummy_pdf1.pdf"
["uri_type"]=>
string(4) "file"
["url_valid"]=>
string(1) "0"
["url_relative"]=>
string(1) "0"
["url_verify"]=>
string(1) "0"
["display_name"]=>
string(0) ""
["description"]=>
string(0) ""
["icon_filename"]=>
string(7) "pdf.gif"
["access"]=>
string(1) "2"
["state"]=>
string(1) "0"
["user_field_1"]=>
string(0) ""
["user_field_2"]=>
string(0) ""
["user_field_3"]=>
string(0) ""
["parent_type"]=>
string(11) "com_content"
["parent_entity"]=>
string(7) "article"
["parent_id"]=>
string(3) "182"
["created"]=>
string(19) "2017-02-16 13:56:39"
["created_by"]=>
string(3) "360"
["modified"]=>
string(19) "2017-02-16 13:56:39"
["modified_by"]=>
string(3) "360"
["download_count"]=>
string(1) "0"
}
[2]=>
array(26) {
["id"]=>
string(1) "3"
["filename"]=>
string(13) "dummy_pdf.pdf"
["filename_sys"]=>
string(71) "/home/website/public_html/cms/attachments/article/181/dummy_pdf.pdf"
["file_type"]=>
string(15) "application/pdf"
["file_size"]=>
string(5) "16555"
["url"]=>
string(37) "attachments/article/181/dummy_pdf.pdf"
["uri_type"]=>
string(4) "file"
["url_valid"]=>
string(1) "0"
["url_relative"]=>
string(1) "0"
["url_verify"]=>
string(1) "0"
["display_name"]=>
string(0) ""
["description"]=>
string(0) ""
["icon_filename"]=>
string(7) "pdf.gif"
["access"]=>
string(1) "2"
["state"]=>
string(1) "0"
["user_field_1"]=>
string(0) ""
["user_field_2"]=>
string(0) ""
["user_field_3"]=>
string(0) ""
["parent_type"]=>
string(11) "com_content"
["parent_entity"]=>
string(7) "article"
["parent_id"]=>
string(3) "181"
["created"]=>
string(19) "2017-02-16 13:56:55"
["created_by"]=>
string(3) "360"
["modified"]=>
string(19) "2017-02-16 13:56:55"
["modified_by"]=>
string(3) "360"
["download_count"]=>
string(1) "0"
}
[3]=>
NULL
}
答案 0 :(得分：3)
在var_dump输出中，我假设您的相应字段为$mantitle['id']和$attach['parent_id']。
你必须在第二个循环中检查这个：
foreach($manualcr as $mantitle){
if($mantitle['id'] != ''){
$attachoverzicht .= '<h3>'.$mantitle['title'].'</h3>';
foreach($manucr as $attach){
if($attach['id'] != '' && $attach['parent_id'] == $mantitle['id']){ // Check for condition added here
$attachoverzicht .= '<li>'.$attach['url'].'</li>';
}
}
}
}
echo $attachoverzicht;