title: PHP str_replace bug
body: <p>I'm running simple PHP code</p>
  
  <pre><code>$myVariable = 1;
  $myVariable2 = str_replace(array(1, 2, 3), array('do 25 lat', 'od 26 do 35 lat', 'pow. 35 r.z.'), $myVariable);
  echo $myVariable2;
  </code></pre>
  
  <p>And result is:</p>
  
  <blockquote>
    <p>do od 26 do pow. 35 r.z.5 lat5 lat</p>
  </blockquote>
  
  <p>I checked on different PHP versions. Any ideas?</p>