(PHP 4 )
substr_count()ã¯ã€æ–‡å—列 haystackã®ä¸ã§ã®å‰¯æ–‡å—列 needleã®å‡ºç¾å›žæ•°ã‚’è¿”ã—ã¾ã™ã€‚
例 1substr_count()ã®ä¾‹
print substr_count("This is a test", "is"); // 2を出力ã™ã‚‹