我收到错误致命错误：未捕获的错误：当我尝试解析xml网页并将数据写入mysql数据库表时，在字符串上调用成员函数children（）
我试图通过使用以下代码来做到这一点 任何人都可以请我以正确的方式为我提供建议，以解析xml网页终结点并将数据写入mysql数据库表中
<?php
function sanitize_for_xml($input) {
// Convert input to UTF-8.
$old_setting = ini_set('mbstring.substitute_character', '"none"');
$input = mb_convert_encoding($input, 'UTF-8', 'auto');
ini_set('mbstring.substitute_character', $old_setting);
// Use fast preg_replace. If failure, use slower chr => int => chr conversion.
$output = preg_replace('/[^\x{0009}\x{000a}\x{000d}\x{0020}-\x{D7FF}\x{E000}-\x{FFFD}]+/u', '', $input);
if (is_null($output)) {
// Convert to ints.
// Convert ints back into a string.
$output = ords_to_utfstring(utfstring_to_ords($input), TRUE);
}
return $output;
}
?>
<?php
$affectedRow = 0;
$url ="https://ngcareers.com/xmlfeed.xml";
$xml = simplexml_load_file($url) or die("Error: Cannot create object");
$xml = sanitize_for_xml($xml);
echo "xml is ".$xml;
$xml = str_replace("[^\\x20-\\x7e]", "",$xml);
$xml = str_replace("<b>", "",$xml);
$xml = str_replace("<u>", "",$xml);
$xml = str_replace("</u>", "",$xml);
$xml = str_replace("<providerUrl>", "",$xml);
$xml = str_replace("</providerUrl>", "",$xml);
$xml = str_replace("‘", "",$xml);
$xml = str_replace("&", "",$xml);
$xml = str_replace("’", "",$xml);
$xml = str_replace("•", "",$xml);
$xml = str_replace("<strong>", "",$xml);
$xml = str_replace("</strong>", "",$xml);
$xml = str_replace("<p>", "",$xml);
$xml = str_replace("</p>", "",$xml);
$xml = str_replace("<br />", "",$xml);
$xml = str_replace("</b>", "",$xml);
$xml = str_replace("<li>", "",$xml);
$xml = str_replace("</li>", "",$xml);
$xml = str_replace("<ul>", "",$xml);
$xml = str_replace("</ul>", "",$xml);
$xml = str_replace("'", "",$xml);
$xml = str_replace(" ", "",$xml);
$xml = str_replace(""", "",$xml);
$xml = str_replace("<!--[endif]-->", "",$xml);
$xml = str_replace("<!--[if !supportLists]-->;", "",$xml);
foreach ($xml->children() as $row) {
$title = $row->title;
$link = $row->url;
$description = $row->description;
$date = $row->date;
$city = $row->city;
$state = $row->state;
$country = $row->country;
$company = $row->company;
$requirements= $row->requirements;
$category = $row->category;
$experience = $row->experience;
$salary = $row->salary;
$id = $row->id;
$sql = "INSERT INTO requirement(title,link,description,
jobdate,city,state,
country,company,requirements,
category,experience,salary,jobid) VALUES ('" . $title . "','" . $link . "','" . $description .
"','" . $date . "','" . $city . "','" . $state . "','" . $country . "','" . $company . "','" .
$requirements . "','" . $category . "','" . $experience . "','" . $salary . "','" . $id
. "')";
$result = mysqli_query($con, $sql);
if (! empty($result)) {
$affectedRow ++;
} else {
$error_message = mysqli_error($con) . "\n";
}
}
?>
<h2>Insert Job Data to Table </h2>
<?php
if ($affectedRow > 0) {
$message = $affectedRow . " records inserted";
} else {
$message = "No records inserted";
}
?>
答案 0 :(得分：0)
您最好将let gradientLayer = CAGradientLayer()
gradientLayer.frame = CGRect(origin: CGPoint(x: 0, y: 0), size: CGSize(width: self.imgView.frame.size.width, height: self.imgView.frame.size.height*0.3))
gradientLayer.colors = [UIColor.black.withAlphaComponent(0.7).cgColor, UIColor.clear.cgColor]
self.imgView.layer.addSublayer(gradientLayer)
let gradientLayer2 = CAGradientLayer()
gradientLayer2.frame = CGRect(origin: CGPoint(x: 0, y: (self.imgView.frame.size.height-self.imgView.frame.size.height*0.3)), size: CGSize(width: self.imgView.frame.size.width, height: self.imgView.frame.size.height*0.3))
gradientLayer2.colors = [UIColor.clear.cgColor, UIColor.black.withAlphaComponent(0.7).cgColor]
self.imgView.layer.addSublayer(gradientLayer2)
用于实际的数据库插入，而IMO，最好将标准prepared statement与DOMDocument结合使用来查询XML feed。就处理DOM而言，以下方法有效，但尚未通过db insert进行测试
DOMXPath更新的代码-愉快地插入99/100行
<?php
/* utility to get item from XPath query relative to $obj */
function nodevalue( $xp, $obj, $item ){
return $xp->query($item,$obj)->item(0)->textContent ?: false;
}
$affectedRow = 0;
$url='https://ngcareers.com/xmlfeed.xml';
/* create DOMDodument - use our own error handling */
libxml_use_internal_errors( true );
$dom=new DOMDocument;
$dom->validateOnParse=false;
$dom->recover=true;
$dom->load( $url );
libxml_clear_errors();
/* create the XPath object for queryng the DOM */
$xp=new DOMXPath( $dom );
/* Get a list of all jobs */
$col=$xp->query( '//jobs/job' );
if( $col->length > 0 ){
/* create the basic SQL insert statement for use in a `prepared statement` */
$sql='insert into `requirement`
( `title`, `link`, `description`, `jobdate`, `city`, `state`, `country`, `company`, `requirements`, `category`, `experience`, `salary`, `jobid` )
values
( ?,?,?,?,?,?,?,?,?,?,?,?,? )';
/* create the prepared statement */
$stmt=$con->prepare( $sql );
if( $stmt ){
/* Bind the placeholders to variables */
$stmt->bind_param('ssssssssssssi',
$title,
$link,
$description,
$date,
$city,
$state,
$country,
$company,
$requirements,
$category,
$experience,
$salary,
$id
);
/* Iterate through all the jobs */
foreach( $col as $job ){
/* assign as variables each item from the job */
$title=nodevalue( $xp, $job, 'title' );
$link=nodevalue( $xp, $job, 'url' );
$description=nodevalue( $xp, $job, 'description' );
$date=nodevalue( $xp, $job, 'date' );
$city=nodevalue( $xp, $job, 'city' );
$state = nodevalue( $xp, $job, 'state' );
$country = nodevalue( $xp, $job, 'country' );
$company = nodevalue( $xp, $job, 'company' );
$requirements= nodevalue( $xp, $job, 'requirements' );
$category = nodevalue( $xp, $job, 'category' );
$experience = nodevalue( $xp, $job, 'experience' );
$salary = nodevalue( $xp, $job, 'salary' );
$id = nodevalue( $xp, $job, 'id' );
/* execute the INSERT statement */
$status=$stmt->execute();
if( $status )$affectedRow++;
}
echo $affectedRow==$col->length ? 'All records inserted' : sprintf('%d rows inserted',$affectedRow);
}
}
?>
答案 1 :(得分：0)
您在剥离xml标签后在xml上使用children（）方法。这意味着您的xml现在实际上是一个字符串。您只能在xml上使用children（）。
$url ="https://ngcareers.com/xmlfeed.xml";
$xml = simplexml_load_file($url);
$data = [];
foreach ($xml->children() as $key => $value) {
if($value->getName() == 'jobs'){
foreach ($value as $jobValue) {
$singleArr = [];
foreach ($jobValue->children() as $childkey => $childValue) {
$singleArr[$childkey] = (string)$childValue;
}
$data[] = $singleArr;
}
}
}
echo '<pre>';print_r($data);
尝试像这样循环以解析xml数据。