我正在使用PHP 7.1.33和"fabpot/goutte": "^3.2"。运行以下脚本时，我得到以下信息：PHP Warning: array_push() expects parameter 1 to be array, null given in C:\Users\testFile.php on line 88PHP Stack trace:PHP 1. {main}() C:\Users\testFile.php:0PHP 2. updateCalendarDetailsData() C:\Users\testFile.php:104PHP 3. Symfony\Component\DomCrawler\Crawler->each($closure = *uninitialized*) C:\Users\testFile.php:99PHP 4. {closure:C:\Users\testFile.php:31-99}($node = *uninitialized*, *uninitialized*) C:\Users\Desktop\Code\vendor\symfony\dom-crawler\Crawler.php:368PHP 5. Symfony\Component\DomCrawler\Crawler->each($closure = *uninitialized*) C:\Users\testFile.php:90PHP 6. {closure:C:\Users\testFile.php:53-90}($LEFT_TD = *uninitialized*, *uninitialized*) C:\Users\Desktop\Code\vendor\symfony\dom-crawler\Crawler.php:368PHP 7. array_push(*uninitialized*, *uninitialized*) C:\Users\testFile.php:88我正在运行以下脚本：<?phprequire 'vendor/autoload.php';use Goutte\Client;use Symfony\Component\DomCrawler\Crawler;function updateCalendarDetailsData(){ $client = new Client(); $x = 1; $LIMIT = 3; global $x; global $LIMIT; $x++; $res1Array = array(); $ffUrlArr = ["https://www.forexfactory.com/calendar.php?month=Jan2020"]; foreach ($ffUrlArr as $key => $v) { try { $crawler = $client->request('GET', $ffUrlArr[$key]); } catch (\Exception $ex) { error_log($ex); } $TEMP = array(); $count = $crawler->filter('.calendar_row')->count(); $i = 1; // count starts at 1 $crawler->filter('.calendar_row')->each(function ($node) use ($count, $i) { $EVENT = array(); global $res1Array; $EVENTID = $node->attr('data-eventid');有什么建议为什么我会收到警告？感谢您的回复！
1 回答
牧羊人nacy
TA贡献1862条经验 获得超7个赞
你需要global $res1Array在updateCalendarDetailsData()函数的顶部。匿名回调函数正在尝试使用此全局变量，但您正在初始化局部变量，而不是全局变量。您似乎假设它global只是允许您从任何外部范围访问变量，但它仅适用于全局变量。
$TEMP和有类似的问题$EVENT。
更好的方法是将变量包含在use()函数列表中。由于您正在使用 修改变量array_push()，因此您需要使用 将它们声明为引用&。
<?php
function updateCalendarDetailsData()
{
$client = new Client();
$x = 1;
$LIMIT = 3;
global $x;
global $LIMIT;
$x++;
$res1Array = array();
$ffUrlArr = ["https://www.forexfactory.com/calendar.php?month=Jan2020"];
foreach ($ffUrlArr as $key => $v) {
try {
$crawler = $client->request('GET', $ffUrlArr[$key]);
} catch (\Exception $ex) {
error_log($ex);
}
$TEMP = array();
$count = $crawler->filter('.calendar_row')->count();
$i = 1; // count starts at 1
$crawler->filter('.calendar_row')->each(function ($node) use ($count, $i, &$res1Array) {
$EVENT = array();
$EVENTID = $node->attr('data-eventid');
$API_RESPONSE = file_get_contents('https://www.forexfactory.com/flex.php?do=ajax&contentType=Content&flex=calendar_mainCal&details=' . $EVENTID);
$API_RESPONSE = str_replace("<![CDATA[", "", $API_RESPONSE);
$API_RESPONSE = str_replace("]]>", "", $API_RESPONSE);
$html = <<<HTML
<!DOCTYPE html>
<html>
<body>
$API_RESPONSE
</body>
</html>
HTML;
$subcrawler = new Crawler($html);
$subcrawler->filter('.calendarspecs__spec')->each(function ($LEFT_TD) use (&$res1Array, &$TEMP, &$EVENT) {
$LEFT_TD_INNER_TEXT = trim($LEFT_TD->text());
if ($LEFT_TD_INNER_TEXT == "Source") {
$TEMP = array();
$LEFT_TD->nextAll()->filter('a')->each(function ($LINK) use (&$TEMP) {
array_push($TEMP, $LINK->text(), $LINK->attr('href'));
});
$EVENT['sourceTEXT'] = $TEMP[0];
$EVENT['sourceURL'] = $TEMP[1];
$EVENT['latestURL'] = $TEMP[3];
}
if ($LEFT_TD_INNER_TEXT == "Measures") {
$EVENT['measures'] = $LEFT_TD->nextAll()->text();
}
if ($LEFT_TD_INNER_TEXT == "Usual Effect") {
$EVENT['usual_effect'] = $LEFT_TD->nextAll()->text();
}
if ($LEFT_TD_INNER_TEXT == "Derived Via") {
$EVENT['derived_via'] = $LEFT_TD->nextAll()->text();
var_dump($EVENT);
print_r($EVENT);
if (empty($EVENT)) {
echo "test";
}
array_push($res1Array, $EVENT); // <---- HERE I GET THE ERROR!
}
});
$i++;
if ($i > $count) {
echo "<pre>";
var_dump($res1Array);
print_r($res1Array);
echo "</pre>";
exit;
}
});
}
return $res1Array;
}
- 1 回答
- 0 关注
- 227 浏览
添加回答
举报
0/150
提交
取消