PHP Classes

How to Use a PHP Currency to USD Calculator to View Currency Exchange Rates Over Time Using the Package Simulador: Display the evolution of a currency exchange rate

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Version License PHP version Categories
simulador 1.0MIT/X Consortium ...5PHP 5, Web services, Finances, Applic..., G...
Description 

Author

This package can display the evolution of a currency exchange rate.

It provides a simple application script that presents a small form for users to specify a currency and renders a chart showing the evolution of that currency's exchange rates against the United States dollar.

The package uses the CoinGecko API to get the currency exchange rates and generate the chart graphics, which are displayed on the same page of the form.

Users can define the currency in which they want to see the exchange rate evolution.

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Name: Rodrigo Faustino <contact>
Classes: 15 packages by
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Example

<!DOCTYPE html>
<html lang="pt-br">
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link href="css/w3.css" rel="stylesheet" />
    <script src="js/jquery-2.2.3.min.js"></script>
<script src="js/chartli.js"></script>
<script src="js/Chart.min.js"></script>
</head>
<style>
@media only screen and (max-width: 600px)
{
   
  .anuncios {
        opacity: 0; /* desaparece no mobile. */
         overflow: hidden;
          display: none;
    }
   
   
}
</style>
<body>
<div class="w3-cell-row">
<div class="w3-container w3-green w3-cell anuncios">
    <p>Anuncio.</p>
   
  </div>
  <div class="w3-container w3-cell w3-card w3-margin-bottom w3-round-large">


  <form method="POST">
  <label for="criptomoeda">Nome da criptomoeda:</label>
  <input type="text" id="criptomoeda" name="criptomoeda" required>
  <button type="submit" class="w3-button w3-white w3-border">Buscar cotação</button>
</form>
<?php
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
 
// Busca a cotação da criptomoeda do CoinGeko
 
$cripto = urlencode($_POST['criptomoeda']);
 
$criptomoeda = str_replace("+","",ltrim(rtrim(strtolower( $cripto))));
 
$url = "https://api.coingecko.com/api/v3/coins/${criptomoeda}";

 
$ch = curl_init();
 
curl_setopt($ch, CURLOPT_URL, $url);
 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
 
$dados = json_decode(curl_exec($ch), true);
 
curl_close($ch);

  if(isset(
$dados["error"])){
    echo
"Verifique se o nome esta correto";
    exit;
  }
 
// Exibe o preço atual, a abertura do preço no dia, a máxima do preço no dia e a mínima do preço no dia
 
echo '<h4 style=color:blue>'.$criptomoeda.'</h4><br>';
  echo
"Preço atual: ".$dados['market_data']['current_price']['usd']." USD<br>";
  echo
"Variação da ultima hora: ".$dados['market_data']['price_change_percentage_1h_in_currency']['usd']." USD<br>";
  echo
"<br><b style=color:green>Máxima do dia: <br> ? "
 
.$dados['market_data']['high_24h']['usd']." USD</b><br>";
  echo
"<br><b style=color:red>Mínima do dia: <br> ? "
 
.$dados['market_data']['low_24h']['usd']." USD</b><br>";

 
// Exibe um gráfico mostrando a variação do preço no dia por intervalos de 15 minutos
 

?>
<form method="POST">
  <label for="criptomoeda">Nome da criptomoeda:</label>
  <input type="text" id="criptomoeda" name="criptomoeda" required>
  <button type="submit" class="w3-button w3-white w3-border">Buscar cotação</button>
</form>

 


 <script>
var criptomoeda = "<?php echo $criptomoeda; ?>";
  // Busca o preço da criptomoeda desde o início do dia

fetch(`https://api.coingecko.com/api/v3/coins/${criptomoeda}/market_chart?vs_currency=usd&days=1&interval=hour`)
  .then(response => response.json())
  .then(dados => {
         // Exibe o gráfico temporal
    var ctx = document.getElementById('grafico').getContext('2d');
   
    var grafico = new Chart(ctx, {
      type: 'line',
      data: {
        labels: dados.prices.map(p => {
          var date = new Date(p[0]);
          return date.getHours() + ':' + date.getMinutes();}), // Timestamps em milissegundos
        datasets: [
        
          {
          label: 'Volume',
          data: dados.total_volumes.map(p => p[1]), // Preços
          backgroundColor: 'rgba(255, 99, 71, 0.2)',
          borderColor: '#DDDbff',
           
          },
           {
          label: 'Preço',
          data: dados.prices.map(p => p[1]), // Preços
          backgroundColor: 'rgba(0, 230, 0, 0.2)',
          borderColor: '#DDDbff',
         
          },
            ]
      }
               
           
    });
  });
       
  fetch(`https://api.coingecko.com/api/v3/coins/${criptomoeda}/market_chart?vs_currency=usd&days=7&interval=day`)
  .then(response => response.json())
  .then(dados => {
         // Exibe o gráfico temporal
     var semana=['Domingo','segunda','Terça','Quarta','Quinta','Sexta','Sábado'];
    var ctx = document.getElementById('grafico7').getContext('2d');
    var grafico = new Chart(ctx, {
      type: 'line',
      data: {
        labels: dados.prices.map(p => {
          var date = new Date(p[0]);
          return semana[date.getDay()]+' - '+date.getHours() + ':' + date.getMinutes();}), // Timestamps em milissegundos
        datasets: [{
          label: 'Preço',
          data: dados.prices.map(p => p[1]), // Preços
          backgroundColor: 'rgba(0, 230, 0, 0.2)',
          borderColor: '#DDDbff',
         
        },
            {
          label: 'Volume',
          data: dados.total_volumes.map(p => p[1]), // Preços
          backgroundColor: 'rgba(255, 99, 71, 0.2)',
          borderColor: '#DDDbff',
        
        }
            ]
      }
    });
  });

    fetch(`https://api.coingecko.com/api/v3/coins/${criptomoeda}/market_chart?vs_currency=usd&days=30&interval=weekday`)
  .then(response => response.json())
  .then(dados => {
       
     var semana=['Domingo','segunda','Terça','Quarta','Quinta','Sexta','Sábado'];

  
    var ctx = document.getElementById('grafico30').getContext('2d');
    var grafico = new Chart(ctx, {
      type: 'line',
      data: {
        labels: dados.prices.map(p => {
          var date = new Date(p[0]);
          return semana[date.getDay()]+' - '+date.getHours() + ':' + date.getMinutes();}), // Timestamps em milissegundos
        datasets: [{
          label: 'Preço',
          data: dados.prices.map(p => p[1]), // Preços
          backgroundColor: 'rgba(0, 230, 0, 0.2)',
          borderColor: '#DDDbff',
        
        },
            {
          label: 'Volume',
          data: dados.total_volumes.map(p => p[1]), // Preços
          backgroundColor: 'rgba(255, 99, 71, 0.2)',
          borderColor: '#DDDbff',
         
        }
            ]
      }
    });
  });
let modelo=[];
  fetch(`https://api.coingecko.com/api/v3/coins/${criptomoeda}/market_chart?vs_currency=usd&days=365&interval=month`)
  .then(response => response.json())
  .then(dados => {

// modelo.push(dados.prices.map(p => {
// var date = new Date(p[0]);
// return date.getDate();}),
// dados.prices.map(p => {
// var date = new Date(p[0]);
// return date.getMonth() }),
// dados.prices.map(p => {
// var date = new Date(p[0]);
// return date.getFullYear();}),
// dados.prices.map(p => p[1])
// );
// console.log(modelo[0][0],modelo[1][0],modelo[2][0],modelo[3][0]);
// var _gerarCsv = function(){
// var csv = 'dia, mes, ano,preco\n';
// for(var i=0;i<modelo[0].length;i++){
// csv += modelo[0][i]+',';
// csv += modelo[1][i]+',';
// csv += modelo[2][i]+',';
// csv += modelo[3][i];
// csv += '\n';
// }
     

// var hiddenElement = document.createElement('a');
// hiddenElement.href = 'data:text/csv;charset=utf-8,' + encodeURI(csv);
// hiddenElement.target = '_blank';
// hiddenElement.download = 'modelo.csv';
// hiddenElement.click();
// };
// _gerarCsv();

     var meses=['Jan','Fev','Mar','Abr','Mai','Jun','Jul','Ago','Set','Out','Nov','Dez'];
     var semana=['Domingo','segunda','Terça','Quarta','Quinta','Sexta','Sábado'];
    var ctx = document.getElementById('grafico365').getContext('2d');
    var grafico = new Chart(ctx, {
      type: 'line',
      data: {
        labels: dados.prices.map(p => {
          var date = new Date(p[0]);
          return meses[date.getMonth()]+' - '+semana[date.getDay()] ;}), // Timestamps em milissegundos
        datasets: [{
          label: 'Preço',
          data: dados.prices.map(p => p[1]), // Preços
          backgroundColor: 'rgba(0, 230, 0, 0.2)',
          borderColor: '#DDDbff',
         
        },
            {
          label: 'Volume',
          data: dados.total_volumes.map(p => p[1]), // Preços
          backgroundColor: 'rgba(255, 99, 71, 0.2)',
          borderColor: '#DDDbff',
         
        }
            ]
      }
    });
  });
 
  
  function openAba(evt, abaName) {
  var i, x, tablinks;
  x = document.getElementsByClassName("aba");
  for (i = 0; i < x.length; i++) {
    x[i].style.display = "none";
  }
  tablinks = document.getElementsByClassName("tablink");
  for (i = 0; i < x.length; i++) {
    tablinks[i].className = tablinks[i].className.replace(" w3-teal", "");
  }
  document.getElementById(abaName).style.display = "block";
  evt.currentTarget.className += " w3-teal";
}
    </script>

<?php
}
?>

<div class="w3-bar w3-grey">
  <button class="w3-bar-item w3-button tablink w3-teal" onclick="openAba(event,'dia')">Dia</button>
  <button class="w3-bar-item w3-button tablink" onclick="openAba(event,'semana')">Semana</button>
  <button class="w3-bar-item w3-button tablink" onclick="openAba(event,'mes')">Mês</button>
  <button class="w3-bar-item w3-button tablink" onclick="openAba(event,'ano')">Ano</button>
</div>

<div id="dia" class="w3-container aba">
<h4>Gráfico do dia</h4>
<canvas id="grafico"></canvas>
</div>

<div id="semana" class="w3-container aba" style="display:none">
<h4>Gráfico últimos 3 dias</h4>
<canvas id="grafico7"></canvas>
</div>
<div id="mes" class="w3-container aba" style="display:none">
<h4>Gráfico últimos 7 dias</h4>
<canvas id="grafico30"></canvas>
</div>
<div id="ano" class="w3-container aba" style="display:none">
<h4>Gráfico último ano</h4>
<canvas id="grafico365"></canvas>
</div>

</div>
   <div class="w3-container w3-green w3-cell anuncios">
    <p>Anuncio.</p>
 
</div>
</div>
   


Details

simulador

Projeto que busca criptomoedas e exbibe alguns gráficos para análises imagem


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