title: PHP Pack Warning: pack(): arguments unused
body: <p>I am getting </p>
  
  <p>Warning: pack(): 1 arguments unused in </p>
  
  <pre><code> $vector = pack("H*",0x77,0x99); 
  
  
  
  
   $vector = pack("H*","4A","76");  // with quotes also give same warning
  </code></pre>
  
  <p>but if i use only one  value there is no Warning</p>
  
  <pre><code> $vector = pack("H*",0x77); 
  </code></pre>
  
  <p>Do anybody know about this  warning ? </p>
  
  <p>what value should i pass to pack . is it should be hex?</p>