<?php
$str1 = "abc";
$str2 = "sadfsdabcsdfabc335liuabclkj300909abcdsf";
echo count(explode($str1,$str2))-1;
?>
$str1 = "abc";
$str2 = "sadfsdabcsdfabc335liuabclkj300909abcdsf";
echo count(explode($str1,$str2))-1;
?>
<?php
$str1 = "abc";
$str2 = "sadfsdabcsdfabc335liuabclkj300909abcdsf";
echo substr_count($str2,$str1);
?>
substr_count都可以知道
echo substr_count("This is a test", "is"); // prints out 2
?>
上面都写着呢...