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模拟红绿灯系统的 CLI 脚本

行为：

1) 06:00-23:00期间

  • 绿灯30秒

  • 绿黄灯亮5秒

  • 红色 40 秒

  • 回到绿色

2) 23:00-06:00期间

  • 黄灯闪烁（2 秒熄灭/1 秒亮）

预期输出：

  • 每秒当前灯光的文本表示
4

3 回答 3

0 
<?php
if (PHP_SAPI !== 'cli') exit("Not allowed here..");

$hour   = date("H");

while (true) {
    // 6am to 11pm
    if($hour >= 6 && $hour < 23){
        $j = 30;
        for ($i=0; $i < $j; $i++) { 
            echo "green light [".($i+1)."]\n";
            sleep(1);
        }
        $j = 5;
        for ($i=0; $i < $j; $i++) { 
            echo $i%2 ? "green" : "yellow";
            echo " light [".($i+1)."]\n";
            sleep(1);
        }
        $j = 40;
        for ($i=0; $i < $j; $i++) { 
            echo "red light [".($i+1)."]\n";
            sleep(1);
        }
    }

    if($hour < 6 || $hour >= 23){
        $j = 2;
        for ($i=0; $i < $j; $i++) { 
            echo "yellow light off [".($i+1)."]\n";
            sleep(1);
        }
        $j = 1;
        for ($i=0; $i < $j; $i++) { 
            echo "yellow light on [".($i+1)."]\n";
            sleep(1);
        }
    }
}

:-D

添加了一个不同的版本来更新 cli 输出而不是打印新行。

<?php
if (PHP_SAPI !== 'cli') exit("Not allowed here..");

$hour   = date("H");

echo "Light |State|Sec\n";
while(true){
    // 6am to 11pm
    if($hour >= 6 && $hour < 23){
        $j = 30;
        for ($i=0; $i < $j; $i++) { 
            output("green","on",$i+1);
        }
        $j = 5;
        for ($i=0; $i < $j; $i++) { 
            $ltcol = $i%2 ? "green" : "yellow";
            output($ltcol,"on",$i+1);
        }
        $j = 40;
        for ($i=0; $i < $j; $i++) { 
            output("red","on",$i+1);
        }
    }
    // 11pm to 6am
    if($hour < 6 || $hour >= 23){
        $j = 2;
        for ($i=0; $i < $j; $i++) { 
            output("yellow","off",$i+1);
        }
        $j = 1;
        for ($i=0; $i < $j; $i++) { 
            output("yellow","on",$i+1);
        }
    }
}

function output($light,$state,$sec){
    $str = str_pad($light, 6, ' ', STR_PAD_RIGHT).' '.str_pad($state, 5, ' ', STR_PAD_RIGHT).' '.str_pad($sec, 2, ' ', STR_PAD_RIGHT);
    echo "\033[16D";
    echo $str;
    sleep(1);
}
于 2019-07-13T10:30:26.510 回答
0 
<?php
if (PHP_SAPI !== 'cli') exit("Not allowed here..");

$hour   = date("H");

while (true) {
// 6am to 11pm
if($hour >= 6 && $hour < 23){
    $j = 30;
    for ($i=0; $i < $j; $i++) { 
        echo "green light [".($i+1)."]\n";
        sleep(1);
    }
    $j = 5;
    for ($i=0; $i < $j; $i++) { 
        echo $i%2 ? "green" : "yellow";
        echo " light [".($i+1)."]\n";
        sleep(1);
    }
    $j = 40;
    for ($i=0; $i < $j; $i++) { 
        echo "red light [".($i+1)."]\n";
        sleep(1);
    }
}

if($hour < 6 || $hour >= 23){
    $j = 2;
    for ($i=0; $i < $j; $i++) { 
        echo "yellow light off [".($i+1)."]\n";
        sleep(1);
    }
    $j = 1;
    for ($i=0; $i < $j; $i++) { 
        echo "yellow light on [".($i+1)."]\n";
        sleep(1);
    }
}
}
于 2019-08-05T12:08:16.627 回答
0

正如在评论中，您同意通过 Javascript 实现此目的这是您有趣的输出。

var increment = 0;
setInterval(function(){
  var time = new Date();
  var hours = time.getHours();
  var seconds = time.getSeconds();
  var count = 75;//green+red
  if(increment >= count){
    increment =0;
  }
  if(hours >= 6 && hours<23 ){
    //daySignal
    document.querySelector('#shift').innerHTML = 'Day Signal';
    if( increment >= 0 && increment < 35){
      displayGreen(35-increment);
    }
    if( increment >= 30 && increment < 35){
      displayYellow(35-increment);
    }
    if( increment >= 35){
      displayRed(count-increment);
    }
  }else{
    // knightSignal
    document.querySelector('#shift').innerHTML = 'Knight Signal';
    reset();
    if( increment %3 != 0){
      displayYellow(0);
    }
  }
  increment +=1;
},1000);

function displayRed(timer='') {
  reset();
  document.querySelector('#timer').innerHTML = timer;
  document.querySelector('#red_light').style.backgroundColor = "red";
}

function displayYellow(timer='') {
  document.querySelector('#timer').innerHTML = timer;
  document.querySelector('#yellow_light').style.backgroundColor = "yellow";
}

function displayGreen(timer='') {
  reset();
  document.querySelector('#timer').innerHTML = timer;
  document.querySelector('#green_light').style.backgroundColor = "green";
}

function reset() {
  document.querySelector('#red_light').style.backgroundColor = "black";
  document.querySelector('#yellow_light').style.backgroundColor = "black";
  document.querySelector('#green_light').style.backgroundColor = "black";
}
.signal {
  height: 30px;
  width: 30px;
  background-color: #000;
  border-radius: 50%;
  margin: 15px auto;
}
.timer{
  color: #000;
  font-size:20px;
  text-align: center;
}
<div id="shift"></div>
<div class="">
  <div id="timer" class="timer"></div>
  <div id="red_light" class="signal"></div>
  <div id="yellow_light" class="signal"></div>
  <div id="green_light" class="signal"></div>
</div>

var increment = 0;
setInterval(function(){
  var time = new Date();
  var hours = time.getHours();
  var seconds = time.getSeconds();
  var count = 75;//green+red
  if(increment >= count){
    increment =0;
  }
  if(false && hours >= 6 && hours<23 ){// false to get night signal
    //daySignal
    document.querySelector('#shift').innerHTML = 'Day Signal';
    if( increment >= 0 && increment < 35){
      displayGreen(35-increment);
    }
    if( increment >= 30 && increment < 35){
      displayYellow(35-increment);
    }
    if( increment >= 35){
      displayRed(count-increment);
    }
  }else{
    // knightSignal
    document.querySelector('#shift').innerHTML = 'Knight Signal';
    reset();
    if( increment %3 != 0){
      displayYellow(increment%3);
    }
  }
  increment +=1;
},1000);

function displayRed(timer='') {
  reset();
  document.querySelector('#timer').innerHTML = timer;
  document.querySelector('#red_light').style.backgroundColor = "red";
}

function displayYellow(timer='') {
  document.querySelector('#timer').innerHTML = timer;
  document.querySelector('#yellow_light').style.backgroundColor = "yellow";
}

function displayGreen(timer='') {
  reset();
  document.querySelector('#timer').innerHTML = timer;
  document.querySelector('#green_light').style.backgroundColor = "green";
}

function reset() {
  document.querySelector('#red_light').style.backgroundColor = "black";
  document.querySelector('#yellow_light').style.backgroundColor = "black";
  document.querySelector('#green_light').style.backgroundColor = "black";
}
.signal {
  height: 30px;
  width: 30px;
  background-color: #000;
  border-radius: 50%;
  margin: 25px auto;
}
.timer{
  color: #000;
  font-size:20px;
  text-align: center;
}
<div id="shift"></div>
<div class="">
  <div id="timer" class="timer"></div>
  <div id="red_light" class="signal"></div>
  <div id="yellow_light" class="signal"></div>
  <div id="green_light" class="signal"></div>
</div>

注意：请不要在有红灯时过马路。

于 2019-07-13T11:20:07.923 回答