给你个巧妙的吧:$str = "," . $str; // ",3.0,7.1,10.2,11.2,12.3,8.1,9.1"
$search = "," . $search;
$pos = strpos($str, $search);
if ( is_int($pos) )
{
if ( $pos == 0 ) $pos = 1;
$result = substr($str, $pos);
}
这个方法看起来麻烦,最简单的:$result = strstr($str, $search);似乎就可以。但我想你的字符串的内容可能不见得就是这个吧?
如果是:$str = "3.7,...,7.1";strstr($str, "7") 就得不到正确结果了。
$search = "," . $search;
$pos = strpos($str, $search);
if ( is_int($pos) )
{
if ( $pos == 0 ) $pos = 1;
$result = substr($str, $pos);
}
这个方法看起来麻烦,最简单的:$result = strstr($str, $search);似乎就可以。但我想你的字符串的内容可能不见得就是这个吧?
如果是:$str = "3.7,...,7.1";strstr($str, "7") 就得不到正确结果了。
$search = "," . $search;
$pos = strpos($str, $search);
if ( is_int($pos) )
{
$pos ++;
$result = substr($str, $pos);
}
else
{
echo "not found";
}
foreach($num as $nums)//遍历数组
{
if((float)$num > (float)$search)//如果$num大于$search,则添加输出
{
$num .= ",";
$result .= $num;
}
}
$result = substr($result,0,strlen($result)-1); //去掉最后的一个","
return $result;//返回
<?
$str="3.0,7.1,10.2,11.2,12.3,8.1,9.1";
$search="7";$nums = explode(",",$str); //切割字符串到数组中
foreach($nums as $num)
{
if((float)$num > (float)$search)//如果$num大于$search,则添加输出
{
$num .= ",";
$result .= $num;
}
}
$result = substr($result,0,strlen($result)-1); //去掉最后的一个","
print $result;7.1,10.2,11.2,12.3,8.1,9.1