php之substr_count判断一个字符串是否包含另一个字符串

 If you only want to look, if a string appears in another string - even at position 0 - , you can also use substr_count():

<?php
  $mystring = "Hello Chris";
  if (substr_count($mystring, "Hello") == 0)
   echo "no";
  // same as:
  if (strpos($mystring, "Hello") === false)
   echo "no";
?>