title: Cut string before a symbol with php
body: <p>How can I cut the string before '(' sign with php</p>
  
  <p>For example:
    $a = "abc dec g (gold)";</p>
  
  <p>How can I cut the string become only "abc dec g"??</p>
  
  <p>I tried to used this strstr($a, '(', true) but error display. </p>