Get PHP DOM attribute value

Question

I’m trying to make an application to take certain values from a page and insert them into a page of mine. I don’t know how to program, but I’m still taking a risk, because it’s to improve my function (bidding analyst). So far I’ve managed to get one of the data, but the other two I’m not getting. I’m using CURL to retrieve session data, and Dom to get the values I need. Follow my code so far:

<?php
error_reporting(E_ALL);
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);


// iniciar sessao
$ch = curl_init();
// opcoes
curl_setopt($ch, CURLOPT_URL, "https://www.comprasnet.gov.br/pregao/fornec/Acompanhar.asp");
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:50.0) Gecko/20100101 Firefox/50.0');
curl_setopt($ch, CURLOPT_SSLVERSION, 3);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_COOKIE, ');

//executar sessao
$output = curl_exec($ch);
    if ($output === FALSE) {               // verifica erros no curl
       echo "cURL Error: " . curl_error($ch);
    }
//fechar sessao
curl_close($ch);

$dom = new DOMDocument;
$dom->loadHTML($output);
// Consultando atributo onclick
$codsprg = $dom->getElementsByTagName('a');
foreach ($codsprg as $codprg) {
$onclick[] = $codprg->getAttribute('onclick');
}
$origens  = array('Motivo_Suspensao(', ');', 'Dados_Pregao(');
$destinos = array('', '', '');
$nova = str_replace($origens, $destinos, $onclick);
$nova = array_filter($nova);
$nova = array_unique($nova);
$nova = array_slice($nova, 0);

// resultado
echo '<pre>';
//print_r ($nova);  Até aqui funciona

$numsprg = $dom->getElementsByTagName('a');
foreach ($numsprg as $numprg) {
$num[] = $numprg->getAttribute('onclick');
}
$new = $num;
echo $new;
?>

Code I want to pick up: I need to get the data of the trading floor, which is between parentheses (I already got), the number of the trading floor that is in the same row of the trading floor data(ex: 512016) and the uasg that is on the line below(ex: 155023).

In the first part of the code I connect to the CURL, then use the DOM to get the first data I need (data). I have tried several possible combinations with the DOM and always return errors such as:

Trying to get property of non-object e 
Call to undefined method DOMDocument::find() in

I have already researched here at Sopt and tested all possible solutions, without success. The current error is:

Notice:  Array to string conversion in C:\Program Files (x86)\EasyPHP-Devserver-16.1\eds-www\aclicita\teste.php on line 49

The line 49 is:

echo $new;

Answer 1

Well, after a while taking a look at the gift and its functions, I managed to make my code work. Below is code that is working.

<?php
header("Content-type: text/html; charset=utf-8");
error_reporting( error_reporting() & ~E_NOTICE );
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);

//Converte caracteres acentuados para não acentuado
$conversao = array('á' => 'a','à' => 'a','ã' => 'a','â' => 'a', 'é' => 'e', 'ê' => 'e', 'í' => 'i', 'ï'=>'i', 'ó' => 'o', 'ô' => 'o', 'õ' => 'o', "ö"=>"o", 'ú' => 'u', 'ü' => 'u', 'ç' => 'c', 'ñ'=>'n', 'Á' => 'A', 'À' => 'A', 'Ã' => 'A', 'Â' => 'A', 'É' => 'E', 'Ê' => 'E', 'Í' => 'I', 'Ï'=>'I', "Ö"=>"O", 'Ó' => 'O', 'Ô' => 'O', 'Õ' => 'O', 'Ú' => 'U', 'Ü' => 'U', 'Ç' =>'C', 'Ñ'=>'N');

// iniciar sessao
$ch = curl_init();
// opcoes
curl_setopt($ch, CURLOPT_URL, "https://www.comprasnet.gov.br/pregao/fornec/Acompanhar.asp");
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:50.0) Gecko/20100101 Firefox/50.0');
curl_setopt($ch, CURLOPT_SSLVERSION, 3);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_COOKIE, 'ASPSESSIONIDSCRRTCSB=LPDMGOACKEJMOBEAJNBNELNC; ASPSESSIONIDQCQRRBQC=ENJMGOACPDMCKBMILFDFHMNJ');

//executar sessao
$output = curl_exec($ch);
    if ($output === FALSE) {               // verifica erros no curl
       echo "cURL Error: " . curl_error($ch);
    }
$output = strtr($output, $conversao); // função de conversão acentuado/não acentuado
//fechar sessao
curl_close($ch);

$dom = new DOMDocument;
$dom->loadHTML($output);
// Pega os códigos de cada pregão
$codsprg = $dom->getElementsByTagName('a');
foreach ($codsprg as $codprg) {
$onclick[] = $codprg->getAttribute('onclick');
}
$origens  = array('Motivo_Suspensao(', ');', 'Dados_Pregao(');
$destinos = array('', '', '');
$nova = str_replace($origens, $destinos, $onclick);  // remove palavras indejadas
$nova = array_filter($nova);
$nova = array_unique($nova);
$nova = array_slice($nova, 0);

// resultado
//echo '<pre>';
//print_r ($nova);

// Pegar os valores do número do pregão
$numsprg = $dom->getElementsByTagName('a');
foreach ($numsprg as $item) {
$prg[] = $item->nodeValue . "\n";
$prg = array_map('trim', $prg); // remove os espaços em branco
}
$origensprg  = array('Suspensao', 'Administrativa', 'Acompanhar', ' ');
$destinosprg = array('', '', '', '');
$newprg = str_replace($origensprg, $destinosprg, $prg); // remove palavras indejadas
$newprg = array_filter($newprg);
$newprg = array_slice($newprg, 0);
// print_r ($newprg);

//Pega os valores da uasg
$numsuasg = $dom->getElementsByTagName('td');
foreach ($numsuasg as $numuasg) {
$uasg[] = $numuasg->nodeValue . "\n";
$uasg = array_map('trim', $uasg); // remove os espaços em branco
}
$newuasg = preg_replace("/[^0-9]/", "", $uasg);   // remove caracteres não numericos do output
$newuasg = array_filter($newuasg);
$newuasg = array_slice($newuasg, 2);
//print_r($newuasg);
?>