<?php    header(‘content-type:text/html;charset="utf-8"‘);    date_default_timezone_set(‘PRC‘); //设置中国时区         $amstart = ‘17:00‘;        //AM            $amend = ‘18:00‘;        //PM    $pmstart = ‘18:30‘;    $pmend = ‘19:30‘;        function getoption($amstart,$amend,$pmstart,$pmend){        $amstart = strtotime($amstart);        $amend = strtotime($amend);        $pmstart = strtotime($pmstart);        $pmend = strtotime($pmend);        //$dateTime = strtotime(date(‘H:i‘));        $am = array();                //计算上午时间范围差        $AmTime = floor(($amend - $amstart)/3600);        //计算下午时间范围差        $PmTime =  floor(($pmend - $pmstart)/3600);        $apTime = ($amend - $pmstart)/3600;        //时间间隔        $time = 30 * 60;        //echo "开始 - 结束: ".change($amstart)." --- ".change($amend);        //echo "<br>开始 - 结束: ".change($pmstart)." --- ".change($pmend);        //echo "<br>上午时间差: ".$AmTime,"<br>下午时间差: ".$PmTime;   　　　
　　　　　for($i=1;$i<=$AmTime*2-1;$i++){                if($i == 1){                $am[$i][‘b‘] = $amstart + $time;        //开始时间                $am[$i][‘e‘] = $am[$i][‘b‘] + $time;    //结束时间            }else{                $am[$i][‘b‘] = $am[$i-1][‘e‘];                $am[$i][‘e‘] = $am[$i][‘b‘] + $time;            }         }        //var_dump(count($am)+1);        $am[count($am)+1][‘d‘] = 1;        $am[count($am)][‘e‘] = $am[count($am)-1][‘e‘];                for($j=1;$j<=$PmTime*2-1;$j++){                if($j == 1){                $pm[$j][‘b‘] = $pmstart + $time;        //开始时间                $pm[$j][‘e‘] = $pm[$j][‘b‘] + $time;    //结束时间            }else{                $pm[$j][‘b‘] = $pm[$j-1][‘e‘];                $pm[$j][‘e‘] = $pm[$j][‘b‘] + $time;            }            $pm[$j][‘d‘] = 0;        }
        $pm[count($pm)+1][‘d‘] = 1;        $pm[count($pm)][‘e‘] = $pm[count($pm)-1][‘e‘];        
　　　　 //合并上下时间        $TimeList = array_merge($am , $pm);        echo "<hr>";        $str = "\n\r";        $k = 1;        foreach($TimeList as $v){            //d($v[‘b‘]);            if($k == 5){                return $str;            }            if($v[‘d‘] == 1 && time()<=$v[‘e‘]){                 $str .= "<option>当前时间为下班时间，不能送餐！</option>";                 $k++;            }            // if($v[‘d‘] == 2 && time()<=$v[‘e‘]){                 // $str .= "<option>当前时间为下班时间，不能送餐！</option>";                 // $k++;            // }                        if($v[‘b‘] > time() ){                $str .= "<option>".change($v[‘b‘]).‘--‘.change($v[‘e‘])."</option>";                $k ++;            }        }        return $str;    }        $dat = getoption($amstart,$amend,$pmstart,$pmend);    d($dat);        echo ‘<select name="some">‘;    echo $dat;    echo ‘</sclect>‘;                function d($v){        echo ‘<pre>‘;        var_dump($v);        echo ‘</pre>‘;    }        function change($date){        //时间戳转换成时分秒        return date(‘H:i‘,$date);    }?>