index.php

<?php
  $welcomeText='<p>Hello MMA</p>';
?>
<?=$welcomeText;?>
<?php
  $xmlstr = <<<XML
<?xml version='1.0' standalone='yes'?>
<questions>
 <question text='Do you like beer?'>
  <answer text='YES!' />
 </question>
</questions>
XML;

  $questions = new SimpleXMLElement($xmlstr);
?>
<p>Spørgsmål : <?=$questions->question[0]['text']?></p>
<p>Svar : <?=$questions->question[0]->answer['text']?>

<?php
  $pattern = "/ca[kf]e/";
  $text = "He was eating cake in the cafe.";
  if(preg_match($pattern, $text)){
    echo "Match found!";
  } else{
    echo "Match not found.";
  }
?>

<?php
  $pattern = "/ca[kf]e/";
  $text = "He was eating cake in the cafe.";
  $matches = preg_match_all($pattern, $text, $array);
  echo $matches . " matches were found.";
?>

<?php
  $pattern = "/\s/";
  $replacement = "-";
  $text = "Earth revolves around\nthe\tSun";
  // Replace spaces, newlines and tabs
  echo preg_replace($pattern, $replacement, $text);
  echo "<br>";
  // Replace only spaces
  echo str_replace(" ", "-", $text);
?>

<?php
  $pattern = "/[\s,]+/";
  $text = "My favourite colors are red, green and blue";
  $parts = preg_split($pattern, $text);
 
  // Loop through parts array and display substrings
  foreach($parts as $part){
    echo $part . "<br>";
  }
?>

<?php
  $pattern = "/^J/";
  $names = array("Jhon Carter", "Clark Kent", "John Rambo");
  $matches = preg_grep($pattern, $names);
 
  // Loop through matches array and display matched names
  foreach($matches as $match){
    echo $match . "<br>";
  }
?>

<?php
  $pattern = "/color/i";
  $text = "Color red is more visible than color blue in daylight.";
  $matches = preg_match_all($pattern, $text, $array);
  echo $matches . " matches were found.";
?>

Total Perspective Vortex