Php While循环foreach返回在下一个for循环中重复的值
在我的代码中发生的事情是我通过查询传递关键字。对于我要运行的每个关键字,我都会获取该关键字的结果,并将它们插入到我的数据库中 我遇到的问题是,不是获得关键字灵感并将其传递给下一个查询,而是将其传递给下一个查询 比如我有。返回id=8、9、10、11、12的值Php While循环foreach返回在下一个for循环中重复的值,php,mysql,arrays,foreach,while-loop,Php,Mysql,Arrays,Foreach,While Loop,在我的代码中发生的事情是我通过查询传递关键字。对于我要运行的每个关键字,我都会获取该关键字的结果,并将它们插入到我的数据库中 我遇到的问题是,不是获得关键字灵感并将其传递给下一个查询,而是将其传递给下一个查询 比如我有。返回id=8、9、10、11、12的值。然后,insert的下一个查询应该只返回5个以上的值,但对于下一个关键字,它会将这些值带过。所以它可能是8,9,10,11,12,13,14,15,16,17 如果我将该值提高到3。它将把这个8、9、10、11、12、13、14、15、16
。然后,insert的下一个查询应该只返回5个以上的值,但对于下一个关键字,它会将这些值带过。所以它可能是8,9,10,11,12,13,14,15,16,17
如果我将该值提高到3
。它将把这个8、9、10、11、12、13、14、15、16、17贯穿其中,并在其中添加五个条目。在我的代码中,我不确定这是在哪里发生的
也许是一个更简单的例子。我查询了一个包含2个关键字的列表。然后在这些关键字中,我需要通过sql2
查询1个关键字,然后在所有这些值中,将它们放入sql3
。所发生的事情是,它没有删除第一个关键字,而是在第二次执行结果。所以如果我查询关键字inspire和inspire。它会质疑灵感一次,它周围的第二层会质疑灵感和灵感。而不仅仅是第二次
$sql = "
SELECT `id` , `title`
FROM `mf8uz_categories`
WHERE `extension` = 'com_hwdmediashare'
LIMIT 0 , 2";
$getInfo = mysql_query($sql);
//$numResults = mysql_num_rows($getInfo);
while($keywordArray = mysql_fetch_array($getInfo))
$keywords[] = $keywordArray;
foreach($keywords as $keyword){
$keyWord = $keyword['title'];
$categoryId = $keyword['id'];
// echo $categoryId . $keyWord . "</br>" . "</br>";
$sql2 = "SELECT `id`, `title`,`description`
FROM `mf8uz_hwdms_media`
WHERE `title` LIKE '%$keyWord%'
OR `description` LIKE '%$keyWord%'
LIMIT 0 , 5";
//echo $sql2 . "<br>";
echo $keyWord . "-------";
$getResults = mysql_query($sql2);
//echo $getResults;
echo mysql_errno($db_server) . ": " . mysql_error($db_server) . "\n";
while($row = mysql_fetch_array($getResults))
$rows[] = $row;
//echo $row . "</br>" . "HERE" ;
foreach($rows as $row) {
$echoDescription = $row['description'];
$echoRow = $row['title'];
$videoId = $row['id'];
echo $videoId . "</br>" . $echoDescription . "</br>" . $echoRow . "</br>";
// echo "category ID equals" . $categoryId . " " . "video id is:" . $videoId ." ". "title is:" . $echoRow . " " . "Keyword Is:" . $keyWord . "</br>";
$sql3 = "INSERT INTO `btheman_dwjo21c4`.`mf8uz_hwdms_category_map` (
`id` ,
`element_type` ,
`element_id` ,
`category_id` ,
`ordering` ,
`created_user_id` ,
`created`
)
VALUES (
'', '1', '$videoId', '$categoryId', '0', '666', '2013-11-27 16:39:09'
);";
//$getResults = mysql_query($sql3);
//echo $sql3 . " " . $echoRow . "</br>";
echo mysql_errno($db_server) . ": " . mysql_error($db_server) . "\n";
}
}
$sql=”
选择'id','title`
来自“mf8uz_”类别`
其中'extension`='com\u hwdmediashare'
限制0,2”;
$getInfo=mysql\u查询($sql);
//$numResults=mysql\u num\u行($getInfo);
while($keywordArray=mysql\u fetch\u array($getInfo))
$keywords[]=$keywordArray;
foreach($keywords作为$keyword){
$keyWord=$keyWord['title'];
$categoryId=$keyword['id'];
//echo$categoryId.$关键字“””;
$sql2=“选择'id','title','description`
来自“mf8uz_hwdms_媒体”`
其中“title”类似“%$keyWord%”
或类似“%$keyWord%”的“description”
限制为0,5”;
//echo$sql2。“
”;
echo$关键字。“----”;
$getResults=mysql\u查询($sql2);
//echo$getResults;
echo mysql\u errno($db\u server)。“:”.mysql\u error($db\u server)。“\n”;
while($row=mysql\u fetch\u数组($getResults))
$rows[]=$row;
//echo$row.“”“此处”;
foreach($行作为$行){
$echoDescription=$row['description'];
$echoRow=$row['title'];
$videoId=$row['id'];
echo$videoId。“”$echoDescription。”“$echoRow。””;
//echo“类别ID等于“$categoryId.”“视频ID为:“$videoId.”“标题为:“$echoRow.”“关键字为:“$Keyword.””;
$sql3=“插入到`btheman_dwjo21c4`.`mf8uz_hwdms_category_map`(
`id`,
`元素类型`,
`元素\u id`,
`类别_id`,
`订购`,
`已创建用户id`,
`创造`
)
价值观(
“‘1’、‘videoId’、‘categoryId’、‘0’、‘666’、‘2013-11-27 16:39:09”
);";
//$getResults=mysql\u查询($sql3);
//echo$sql3.“$echoRow.”“;
echo mysql\u errno($db\u server)。“:”.mysql\u error($db\u server)。“\n”;
}
}
我认为问题在于,您没有在每个循环中初始化或重置$row
。例如,这一行在我看来很突出:
while($row = mysql_fetch_array($getResults))
$rows[] = $row;
//echo $row . "</br>" . "HERE" ;
foreach($rows as $row) {
我相信只需通过$rows=array()添加array()
init代码>将解决此问题。但仍在查看代码,看看是否还有其他内容
编辑确定在此处发现另一个类似问题:
//$numResults = mysql_num_rows($getInfo);
while($keywordArray = mysql_fetch_array($getInfo))
$keywords[] = $keywordArray;
注意$keywords[]
但是数组从未初始化或重置?这样做:
$keywords = array();
//$numResults = mysql_num_rows($getInfo);
while($keywordArray = mysql_fetch_array($getInfo))
$keywords[] = $keywordArray;
添加$keywords=array()
将确保($keywordArray=mysql\u fetch\u array($getInfo))
中的每个循环都被重置,以提供正确的结果
另一次编辑我重新格式化了您的代码,并在此过程中添加了我的修复程序,以便更清楚地看到发生了什么。通常,只要正确地清理和格式化代码,就可以更容易地调试和发现瓶颈。如果你遇到了一个让你头疼的问题,看看你能不能把代码整理一下&在你意识到之前,问题已经解决了
$sql = "SELECT `id` , `title`"
. " FROM `mf8uz_categories`"
. " WHERE `extension` = 'com_hwdmediashare'"
. " LIMIT 0,2"
;
$getInfo = mysql_query($sql);
// $numResults = mysql_num_rows($getInfo);
$keywords = array();
while($keywordArray = mysql_fetch_array($getInfo)) {
$keywords[] = $keywordArray;
}
foreach ($keywords as $keyword) {
$keyWord = $keyword['title'];
$categoryId = $keyword['id'];
// echo $categoryId . $keyWord . "</br>" . "</br>";
$sql2 = "SELECT `id`, `title`,`description`"
. " FROM `mf8uz_hwdms_media`"
. " WHERE `title` LIKE '%$keyWord%'"
. " OR `description` LIKE '%$keyWord%'"
. " LIMIT 0 , 5"
;
// echo $sql2 . "<br>";
echo $keyWord . "-------";
$getResults = mysql_query($sql2);
//echo $getResults;
echo mysql_errno($db_server) . ": " . mysql_error($db_server) . "\n";
$rows = array();
while($row = mysql_fetch_array($getResults)) {
$rows[] = $row;
}
//echo $row . "</br>" . "HERE" ;
foreach($rows as $row) {
$echoDescription = $row['description'];
$echoRow = $row['title'];
$videoId = $row['id'];
echo $videoId . "</br>" . $echoDescription . "</br>" . $echoRow . "</br>";
// echo "category ID equals" . $categoryId . " " . "video id is:" . $videoId ." ". "title is:" . $echoRow . " " . "Keyword Is:" . $keyWord . "</br>";
$sql3 = "INSERT INTO `btheman_dwjo21c4`.`mf8uz_hwdms_category_map` (
`id` ,
`element_type` ,
`element_id` ,
`category_id` ,
`ordering` ,
`created_user_id` ,
`created`
)
VALUES (
'', '1', '$videoId', '$categoryId', '0', '666', '2013-11-27 16:39:09'
);";
//$getResults = mysql_query($sql3);
//echo $sql3 . " " . $echoRow . "</br>";
echo mysql_errno($db_server) . ": " . mysql_error($db_server) . "\n";
} // end foreach '$rows'
} // end foreach '$keywords'
$sql=“选择'id','title`”
. “来自`mf8uz_类别`”
. “其中`extension`='com\u hwdmediashare'”
. “限制0,2”
;
$getInfo=mysql\u查询($sql);
//$numResults=mysql\u num\u行($getInfo);
$keywords=array();
while($keywordArray=mysql\u fetch\u array($getInfo)){
$keywords[]=$keywordArray;
}
foreach($keywords作为$keyword){
$keyWord=$keyWord['title'];
$categoryId=$keyword['id'];
//echo$categoryId.$关键字“””;
$sql2=“选择`id`、`title`、`description`”
“从'mf8uz\U hwdms\U媒体'
“其中'title'类似于“%$keyWord%””
“或类似“%$keyWord%”的“描述”
“限制0,5”
;
//echo$sql2。“
”;
echo$关键字。“----”;
$getResults=mysql\u查询($sql2);
//echo$getResults;
echo mysql\u errno($db\u server)。“:”.mysql\u error($db\u server)。“\n”;
$rows=array();
while($row=mysql\u fetch\u数组($getResults)){
$rows[]=$row;
}
//echo$row.“”“此处”;
foreach($行作为$行){
$echoDescription=$row['description'];
$echoRow=$row['title'];
$videoId=$row['id'];
echo$videoId。“”$echoDescription。”“$echoRow。””;
//echo“类别ID等于“$categoryId.”“视频ID为:“$videoId.”“标题为:“$echoRow.”“关键字为:“$Keyword.””;
$sql3=“插入到`btheman_dwjo21c4`.`mf8uz_hwdms_category_map`(
`id`,
`元素类型`,
`元素\u id`,
`类别_id`,
`订购`,
`已创建用户id`,
`创造`
)
价值观(
“‘1’、‘videoId’、‘categoryId’、‘0’、‘666’、‘2013-11-27 16:39:09”
);";
//$getResults=mysql\u查询($sql3);
//echo$sql3.“$echoRow.”“;
echo mysql\u errno($db\u server)。“:”.mysql\u error($db\u server)。“\n”;
$sql = "SELECT `id` , `title`"
. " FROM `mf8uz_categories`"
. " WHERE `extension` = 'com_hwdmediashare'"
. " LIMIT 0,2"
;
$getInfo = mysql_query($sql);
// $numResults = mysql_num_rows($getInfo);
$keywords = array();
while($keywordArray = mysql_fetch_array($getInfo)) {
$keywords[] = $keywordArray;
}
foreach ($keywords as $keyword) {
$keyWord = $keyword['title'];
$categoryId = $keyword['id'];
// echo $categoryId . $keyWord . "</br>" . "</br>";
$sql2 = "SELECT `id`, `title`,`description`"
. " FROM `mf8uz_hwdms_media`"
. " WHERE `title` LIKE '%$keyWord%'"
. " OR `description` LIKE '%$keyWord%'"
. " LIMIT 0 , 5"
;
// echo $sql2 . "<br>";
echo $keyWord . "-------";
$getResults = mysql_query($sql2);
//echo $getResults;
echo mysql_errno($db_server) . ": " . mysql_error($db_server) . "\n";
$rows = array();
while($row = mysql_fetch_array($getResults)) {
$rows[] = $row;
}
//echo $row . "</br>" . "HERE" ;
foreach($rows as $row) {
$echoDescription = $row['description'];
$echoRow = $row['title'];
$videoId = $row['id'];
echo $videoId . "</br>" . $echoDescription . "</br>" . $echoRow . "</br>";
// echo "category ID equals" . $categoryId . " " . "video id is:" . $videoId ." ". "title is:" . $echoRow . " " . "Keyword Is:" . $keyWord . "</br>";
$sql3 = "INSERT INTO `btheman_dwjo21c4`.`mf8uz_hwdms_category_map` (
`id` ,
`element_type` ,
`element_id` ,
`category_id` ,
`ordering` ,
`created_user_id` ,
`created`
)
VALUES (
'', '1', '$videoId', '$categoryId', '0', '666', '2013-11-27 16:39:09'
);";
//$getResults = mysql_query($sql3);
//echo $sql3 . " " . $echoRow . "</br>";
echo mysql_errno($db_server) . ": " . mysql_error($db_server) . "\n";
} // end foreach '$rows'
} // end foreach '$keywords'