Example: Regular expressions

Demonstrates how to work with regex module based on PRCE and PHP compatible functions.

<?php <?v1

require_once ("lib/wget.inc.v1");

function getStockValues () 
{
  url = "https://www.finanznachrichten.de";  

  // Use WGet library to receive HTML website
  website = wget (url, null, false, false, ["noCheckCert" => true]);
  if (website["errText"]!="") {
    return "Error: ".website["errText"];
  }
  else {
    // List of PCRE patterns
    patternList = [
          "Dow Jones" => 'data-item="AMAP_US2605661048.AII" data-field="Rate">(.*?)<\/div>',
          "NASDAQ 100" => 'data-item="AMAP_US6311011026.AII" data-field="Rate">(.*?)<\/div>',
          "German DAX" => 'data-item="AMAP_DE0008469008.AII" data-field="Rate">(.*?)<\/div>',  
          "Oil (WTI)" => 'data-item="AMAP_XC0009677409.AIR" data-field="Rate">(.*?)<\/td>',
          "USDEUR" => 'data-item="AMAP_EU0009652759.AID" data-field="Rate">(.*?)<\/td>',
          "Gold" => 'data-item="AMAP_XC0009655157.AIR" data-field="Rate">(.*?)<\/td>'      
    ];

    stockList = array ();
    foreach (patternList as name => pattern) {
      matches = array ();      
      // Check the pattern
      ret  = preg_match_all (pattern, website["content"], matches);
      if (ret) {
        // Value found, remove . and replace , with .
        stockList[name]=str_replace (array (".", ","), array ("", "."), matches[1][0]);
      }
      else {
        stockList[name]="<not found, check pattern>";
      }
    }
    return stockList;
  }
  return -1; 
}


print_r (getStockValues ());

?>

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