//插入一段字符串
function str_insert($str, $i, $substr)
{
for($j=0; $j<$i; $j++){
$startstr .= $str[$j];
}
for ($j=$i; $j
}
$str = ($startstr . $substr . $laststr);
return $str;
}
Popularity: 3%
//插入一段字符串
function str_insert($str, $i, $substr)
{
for($j=0; $j<$i; $j++){
$startstr .= $str[$j];
}
for ($j=$i; $j
}
$str = ($startstr . $substr . $laststr);
return $str;
}
Popularity: 3%
