21、PHP实现获取当前页面完整url地址的函数
function get_url(){
$url = (isset($_SERVER['SERVER_PORT']) && $_SERVER['SERVER_PORT'] == '443') ? 'https://' : 'http://';
$url .= $_SERVER['HTTP_HOST'];
$url .= isset($_SERVER['REQUEST_URI']) ? $_SERVER['REQUEST_URI'] : urlencode($_SERVER['PHP_SELF']) . '?' . urlencode($_SERVER['QUERY_STRING']);
return $url;
}
22、PHP实现二维数组排序的通用方法
function array_sort($arr,$keys,$type='asc'){
$keysvalue = $new_array = array();
foreach ($arr as $k=>$v){
$keysvalue[$k] = $v[$keys];
}
if($type == 'asc'){
asort($keysvalue);
}else{
arsort($keysvalue);
}
reset($keysvalue);
foreach ($keysvalue as $k=>$v){
$new_array[$k] = $arr[$k];
}
return $new_array;
}
23、PHP实现获得一段时间内所在的所有周的时间
function getWeek($startdate,$enddate)
{
//参数不能为空
if(!empty($startdate) && !empty($enddate)){
//先把两个日期转为时间戳
$startdate=strtotime($startdate);
$enddate=strtotime($enddate);
//开始日期不能大于结束日期
if($startdate<=$enddate){
$end_date=strtotime("next monday",$enddate);
if(date("w",$startdate)==1){
$start_date=$startdate;
}else{
$start_date=strtotime("last monday",$startdate);
}
//计算时间差多少周
$countweek=($end_date-$start_date)/(7*24*3600);
for($i=0;$i<$countweek;$i++){
$sd=date("Y-m-d",$start_date);
$ed=strtotime("+ 6 days",$start_date);
$eed=date("Y-m-d",$ed);
$arr[]=array($sd,$eed);
$start_date=strtotime("+ 1 day",$ed);
}
return $arr;
}
}
}
24、PHP实现把字符内容转换为二进制
function StrToBin($str){
function StrToBin($str){
//1.列出每个字符
$arr = preg_split('/(?<!^)(?!$)/u', $str);
//2.unpack字符
foreach($arr as &$v){
$temp = unpack('H*', $v);
$v = base_convert($temp[1], 16, 2);
unset($temp);
}
return join(' ',$arr);
}
25、PHP实现把二进制转换为字符内容
function BinToStr($str){
function BinToStr($str){
$arr = explode(' ', $str);
foreach($arr as &$v){
$v = pack("H".strlen(base_convert($v, 2, 16)), base_convert($v, 2, 16));
}
return join('', $arr);
}