我试图从网站上读取某些部分，但我无法正确显示它，它没有抓住正确的部分，而是只显示所有部分（整个页面），而不是我选择的对象。
这是我试图复制的页面。http://www.jabbithole.com/classes/engineer
我想要的是图像、拼写名称和类型作为3个变量，这样我就可以将它们放入一个名为"spells"的数组中。
$items = array('engineer');
foreach($items as $key => $value) {
$url = 'http://www.jabbithole.com/classes/'.$value;
$html = file_get_contents($url);
$dom = new domDocument;
@$dom->loadHTML($html);
$dom->preserveWhiteSpace = false;
$info = $dom->getElementsByTagName('tbody');
$trs = $dom->getElementsByTagName('tr');
$spells = array();
foreach($trs as $tr) {
foreach($tr->getElementsByTagName('td') as $row) {
foreach($row->getElementsByTagName('a') as $link) {
$class = $link->getAttribute('class');
if($class == 'icon')
{
$img = $link->getAttribute('src');
print_r($img);
}
else
{
$name = $link->nodeValue;
print_r($name);
}
}
}
}
}
标记我正试图让它读
<table class="datalist dataTable">
<thead>
<tr>
<th class="left">Name</th>
<th>Type</th>
<th class="left int-sort">Source</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name">
<a class="icon" href="/spells/mode-eradicate-47866">
<img alt="Icon skillengineer eradication mode.36" src="/assets/icons/icon_skillengineer_eradication_mode.36.png" />
</a> <a href="/spells/mode-eradicate-47866">Mode: Eradicate</a>
</td>
<td class="center">Innate</td>
<td>Class innate</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/mode-provoke-47881">
<img alt="Icon skillengineer survival mode.36" src="/assets/icons/icon_skillengineer_survival_mode.36.png" />
</a> <a href="/spells/mode-provoke-47881">Mode: Provoke</a>
</td>
<td class="center">Innate</td>
<td>Class innate</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/pulse-blast-42276">
<img alt="Icon skillengineer pulse blast.36" src="/assets/icons/icon_skillengineer_pulse_blast.36.png" />
</a> <a href="/spells/pulse-blast-42276">Pulse Blast</a>
</td>
<td class="center">Assault</td>
<td>Level 1</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/electrocute-41276">
<img alt="Icon skillengineer electrocute.36" src="/assets/icons/icon_skillengineer_electrocute.36.png" />
</a> <a href="/spells/electrocute-41276">Electrocute</a>
</td>
<td class="center">Assault</td>
<td>Level 2</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/artillery-bot-42814">
<img alt="Icon skillengineer artillery bot.36" src="/assets/icons/icon_skillengineer_artillery_bot.36.png" />
</a> <a href="/spells/artillery-bot-42814">Artillerybot</a>
</td>
<td class="center">Assault</td>
<td>Level 6</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/quick-burst-41477">
<img alt="Icon skillengineer quick burst.36" src="/assets/icons/icon_skillengineer_quick_burst.36.png" />
</a> <a href="/spells/quick-burst-41477">Quick Burst</a>
</td>
<td class="center">Assault</td>
<td>Level 6</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/energy-auger-34426">
<img alt="Icon skillengineer energy trail.36" src="/assets/icons/icon_skillengineer_energy_trail.36.png" />
</a> <a href="/spells/energy-auger-34426">Energy Auger</a>
</td>
<td class="center">Assault</td>
<td>Level 11</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/bio-shell-41341">
<img alt="Icon skillengineer bioshell.36" src="/assets/icons/icon_skillengineer_bioshell.36.png" />
</a> <a href="/spells/bio-shell-41341">Bio Shell</a>
</td>
<td class="center">Assault</td>
<td>Level 13</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/mortar-strike-41543">
<img alt="Icon skillengineer mortar strike.36" src="/assets/icons/icon_skillengineer_mortar_strike.36.png" />
</a> <a href="/spells/mortar-strike-41543">Mortar Strike</a>
</td>
<td class="center">Assault</td>
<td>Level 13</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/unstable-anomaly-34669">
<img alt="Icon skillengineer anomaly launcher.36" src="/assets/icons/icon_skillengineer_anomaly_launcher.36.png" />
</a> <a href="/spells/unstable-anomaly-34669">Unstable Anomaly</a>
</td>
<td class="center">Assault</td>
<td>Level 15</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/target-acquisition-38036">
<img alt="Icon skillengineer target acquistion.36" src="/assets/icons/icon_skillengineer_target_acquistion.36.png" />
</a> <a href="/spells/target-acquisition-38036">Target Acquisition</a>
</td>
<td class="center">Assault</td>
<td>Level 18 AMP</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/bolt-caster-34836">
<img alt="Icon skillengineer bolt caster.36" src="/assets/icons/icon_skillengineer_bolt_caster.36.png" />
</a> <a href="/spells/bolt-caster-34836">Bolt Caster</a>
</td>
<td class="center">Assault</td>
<td>Level 24</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/bruiser-bot-42894">
<img alt="Icon skillengineer bruiser bot.36" src="/assets/icons/icon_skillengineer_bruiser_bot.36.png" />
</a> <a href="/spells/bruiser-bot-42894">Bruiserbot</a>
</td>
<td class="center">Support</td>
<td>Level 4</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/flak-cannon-41426">
<img alt="Icon skillengineer flak cannon.36" src="/assets/icons/icon_skillengineer_flak_cannon.36.png" />
</a> <a href="/spells/flak-cannon-41426">Flak Cannon</a>
</td>
<td class="center">Support</td>
<td>Level 9</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/hyper-wave-41275">
<img alt="Icon skillengineer hyper wave.36" src="/assets/icons/icon_skillengineer_hyper_wave.36.png" />
</a> <a href="/spells/hyper-wave-41275">Hyper Wave</a>
</td>
<td class="center">Support</td>
<td>Level 9</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/unsteady-miasma-41484">
<img alt="Icon skillengineer give em gas.36" src="/assets/icons/icon_skillengineer_give_em_gas.36.png" />
</a> <a href="/spells/unsteady-miasma-41484">Unsteady Miasma</a>
</td>
<td class="center">Support</td>
<td>Level 11</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/feedback-41864">
<img alt="Icon skillengineer feedback.36" src="/assets/icons/icon_skillengineer_feedback.36.png" />
</a> <a href="/spells/feedback-41864">Feedback</a>
</td>
<td class="center">Support</td>
<td>Level 15</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/disruptive-module-41815">
<img alt="Icon skillengineer disruptive mod.36" src="/assets/icons/icon_skillengineer_disruptive_mod.36.png" />
</a> <a href="/spells/disruptive-module-41815">Disruptive Module</a>
</td>
<td class="center">Support</td>
<td>Level 18 AMP</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/ricochet-41429">
<img alt="Icon skillengineer ricochet.36" src="/assets/icons/icon_skillengineer_ricochet.36.png" />
</a> <a href="/spells/ricochet-41429">Ricochet</a>
</td>
<td class="center">Support</td>
<td>Level 18</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/shock-pulse-42585">
<img alt="Icon skillengineer shock pulse.36" src="/assets/icons/icon_skillengineer_shock_pulse.36.png" />
</a> <a href="/spells/shock-pulse-42585">Shock Pulse</a>
</td>
<td class="center">Support</td>
<td>Level 21</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/particle-ejector-34658">
<img alt="Icon skillengineer particule ejector.36" src="/assets/icons/icon_skillengineer_particule_ejector.36.png" />
</a> <a href="/spells/particle-ejector-34658">Particle Ejector</a>
</td>
<td class="center">Support</td>
<td>Level 24</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/thresher-52133">
<img alt="Icon skillengineer thresher.36" src="/assets/icons/icon_skillengineer_thresher.36.png" />
</a> <a href="/spells/thresher-52133">Thresher</a>
</td>
<td class="center">Support</td>
<td>Level 31</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/zap-41438">
<img alt="Icon skillengineer zap.36" src="/assets/icons/icon_skillengineer_zap.36.png" />
</a> <a href="/spells/zap-41438">Zap</a>
</td>
<td class="center">Utility</td>
<td>Level 3</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/urgent-withdrawal-34522">
<img alt="Icon skillengineer urgent withdrawal.36" src="/assets/icons/icon_skillengineer_urgent_withdrawal.36.png" />
</a> <a href="/spells/urgent-withdrawal-34522">Urgent Withdrawal</a>
</td>
<td class="center">Utility</td>
<td>Level 6</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/recursive-matrix-42572">
<img alt="Icon skillengineer recursive matrix.36" src="/assets/icons/icon_skillengineer_recursive_matrix.36.png" />
</a> <a href="/spells/recursive-matrix-42572">Recursive Matrix</a>
</td>
<td class="center">Utility</td>
<td>Level 9</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/diminisher-bot-42833">
<img alt="Icon skillengineer diminisher bot.36" src="/assets/icons/icon_skillengineer_diminisher_bot.36.png" />
</a> <a href="/spells/diminisher-bot-42833">Diminisherbot</a>
</td>
<td class="center">Utility</td>
<td>Level 15</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/repair-bot-42810">
<img alt="Icon skillengineer repair bot.36" src="/assets/icons/icon_skillengineer_repair_bot.36.png" />
</a> <a href="/spells/repair-bot-42810">Repairbot</a>
</td>
<td class="center">Utility</td>
<td>Level 18 AMP</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/shatter-impairment-42803">
<img alt="Icon skillengineer shatter impairment.36" src="/assets/icons/icon_skillengineer_shatter_impairment.36.png" />
</a> <a href="/spells/shatter-impairment-42803">Shatter Impairment</a>
</td>
<td class="center">Utility</td>
<td>Level 18</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/volatile-injection-41756">
<img alt="Icon skillengineer volatile injection.36" src="/assets/icons/icon_skillengineer_volatile_injection.36.png" />
</a> <a href="/spells/volatile-injection-41756">Volatile Injection</a>
</td>
<td class="center">Utility</td>
<td>Level 21</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/code-red-41623">
<img alt="Icon skillengineer code red.36" src="/assets/icons/icon_skillengineer_code_red.36.png" />
</a> <a href="/spells/code-red-41623">Code Red</a>
</td>
<td class="center">Utility</td>
<td>Level 27</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/personal-defense-unit-44471">
<img alt="Icon skillengineer personal defense unit.36" src="/assets/icons/icon_skillengineer_personal_defense_unit.36.png" />
</a> <a href="/spells/personal-defense-unit-44471">Personal Defense Unit</a>
</td>
<td class="center">Utility</td>
<td>Level 27</td>
</tr>
<tr>
<td class="name">
<a class="icon" href="/spells/obstruct-vision-51605">
<img alt="Icon skillengineer shock wave.36" src="/assets/icons/icon_skillengineer_shock_wave.36.png" />
</a> <a href="/spells/obstruct-vision-51605">Obstruct Vision</a>
</td>
<td class="center">Utility</td>
<td>Level 31</td>
</tr>
</tbody>
</table>看起来有人打败了我，但这里有另一种做同样事情的方法。这次使用的是核心PHP函数。您可以使用DOMDocument解析文档，然后通过一些简单的DOMXPath查询获取请求的内容：
// Load the HTML into a DOM document (@ = suppress a bunch of warnings)
$dom = new DOMDocument();
@$dom->loadHTMLFile('http://www.jabbithole.com/classes/engineer');
// Create a DOM XPath object
$xpath = new DOMXPath($dom);
// Find all <tr> tags within the first <table> element, skipping the first <tr>
// which is the header
$trs = $xpath->query('//table[1]//tr[position() > 1]');
// Loop through found <tr> tags
$abilities = [];
foreach ($trs as $tr) {
// Name is value of first <td> inside <tr>
// Type is value of second <td> inside <tr>
// Image is the src attribute of the <img> tag inside <tr>
$name = $xpath->query('.//td[1]', $tr)->item(0)->nodeValue;
$type = $xpath->query('.//td[2]', $tr)->item(0)->nodeValue;
$image = $xpath->query('.//img/@src', $tr)->item(0)->nodeValue;
// Add to result array
$abilities[] = array(
'name' => trim($name),
'type' => trim($type),
'image' => trim($image),
);
}
print_r($abilities);
输出：
Array
(
[0] => Array
(
[name] => Mode: Eradicate
[type] => Innate
[image] => /assets/icons/icon_skillengineer_eradication_mode.36.png
)
...
[31] => Array
(
[name] => Obstruct Vision
[type] => Utility
[image] => /assets/icons/icon_skillengineer_shock_wave.36.png
)
)
使用此库：
<?PHP
//include library
require('simple_html_dom.php');
$items = array('engineer');
foreach($items as $key => $value) {
$url = 'http://www.jabbithole.com/classes/'.$value;
//read html from server and create html_dom object
$html = file_get_html($url);
//find the table using css selectors
$table = $html->find('#tab-abi table', 0);
$results = array();
$first = true;
//iterate each tr
foreach($table->find('tr') as $element){
//skip first tr (table header)
if($first){
$first = false;
continue;
}
//extract data
$results[] = array(
'image' => $element->find('img',0)->src,
'name' => $element->find('.name',0)->plaintext,
'class' => $element->find('.center',0)->plaintext
);
}
}
print_r($results);
?>
该库允许您使用CSS选择器（jQuery样式）查询DOM，还支持格式错误的HTML。