我搜索了无数的页面,试图找到一个真正有效的答案。我尝试过库文件专门处理警告和错误处理,但即使我抑制了所有警告和错误,最后一个警告仍然显示:
Warning: DOMDocument::loadHTML(): Empty string supplied as input
我的php处理如下。只要用户输入一个实际的url,代码就可以完美地工作,但是当用户输入的数据不是url时,就会显示上面的警告。
if (isset($_GET[article_url])){
$title = 'contact us';
$str = @file_get_contents($_GET[article_url]);
$test1 = str_word_count(strip_tags(strtolower($str)));
if($test1 === FALSE) { $test = '0'; }
if ($test1 > '550') {
echo '<div><i class="fa fa-check-square-o" style="color:green"></i> This article has '.$test1.' words.';
} else {
echo '<div><i class="fa fa-times-circle-o" style="color:red"></i> This article has '.$test1.' words. You are required to have a minimum of 500 words.</div>';
}
$document = new DOMDocument();
$libxml_previous_state = libxml_use_internal_errors(true);
$document->loadHTML($str);
libxml_use_internal_errors($libxml_previous_state);
$tags = array ('h1', 'h2');
$texts = array ();
foreach($tags as $tag)
{
$elementList = $document->getElementsByTagName($tag);
foreach($elementList as $element)
{
$texts[$element->tagName] = strtolower($element->textContent);
}
}
if(in_array(strtolower($title),$texts)) {
echo '<div><i class="fa fa-check-square-o" style="color:green"></i> This article used the correct title tag.</div>';
} else {
echo "no";
}
}
如何抑制此警告?
似乎建议停止抑制警告,而是修复它们,所以当我停止抑制它们时,我会列出所有警告
Warning: DOMDocument::loadHTML(): htmlParseEntityRef: expecting ';' in Entity
Warning: DOMDocument::loadHTML(): htmlParseStartTag: misplaced <body> tag in Entity
Warning: DOMDocument::loadHTML(): Tag header invalid in Entity
Warning: DOMDocument::loadHTML(): Tag section invalid in Entity
Warning: DOMDocument::loadHTML(): error parsing attribute name in Entity
Warning: DOMDocument::loadHTML(): Tag footer invalid in Entity
Warning: DOMDocument::loadHTML(): htmlParseEntityRef: no name in Entity
DOMDocument::loadHTML(): Unexpected end tag : strong in Entity
请记住,我正在扫描用户输入的url,所以我无法控制测试页面的格式,这意味着我无法修复他们的代码。
那么,如果不抑制警告,我该怎么办?
好吧@Bruce。。我现在明白这个问题了。你想做的是测试file_get_contents()
的值
<?php
error_reporting(-1);
ini_set("display_errors", 1);
$article_url = 'http://google.com';
if (isset($article_url)){
$title = 'contact us';
$str = @file_get_contents($article_url);
// return an error
if ($str === FALSE) {
echo 'problem getting url';
return false;
}
// Continue
$test1 = str_word_count(strip_tags(strtolower($str)));
if ($test1 === FALSE) $test = '0';
if ($test1 > '550') {
echo '<div><i class="fa fa-check-square-o" style="color:green"></i> This article has ' . $test1 . ' words.';
} else {
echo '<div><i class="fa fa-times-circle-o" style="color:red"></i> This article has ' . $test1 . ' words. You are required to have a minimum of 500 words.</div>';
}
$document = new DOMDocument();
$libxml_previous_state = libxml_use_internal_errors(true);
$document->loadHTML($str);
libxml_use_internal_errors($libxml_previous_state);
$tags = array ('h1', 'h2');
$texts = array ();
foreach($tags as $tag) {
$elementList = $document->getElementsByTagName($tag);
foreach($elementList as $element) {
$texts[$element->tagName] = strtolower($element->textContent);
}
}
if (in_array(strtolower($title),$texts)) {
echo '<div><i class="fa fa-check-square-o" style="color:green"></i> This article used the correct title tag.</div>';
} else {
echo "no";
}
}
?>
所以if ($str === FALSE) { //return an error }
,不要让脚本继续。你可以像我现在做的那样返回false,或者只做if/else。
return $this->subject($data['subject'])->markdown('mails.send_instant_notification', compact('data'));
如果使用markdown作为模板构建,请不要包含内联样式。但若你们使用的是视图,你们可以包含内联css样式。
return $this->subject($data['subject'])
->view('mails.send_instant_notification', compact('data'));