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php gets some time to implement method practice

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Release： 2023-03-23 17:36:02

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The content shared with you in this article is about the implementation method and practice of obtaining some time in PHP. It has a certain reference value. Friends in need can refer to it.

I have encountered it during development these days. I have sorted out some time issues and shared them with everyone. You can take a look and use them if necessary.

1. Get the first and last day of last month.

   echo date(&#39;Y-m-01&#39;, strtotime(&#39;-1 month&#39;));   
   echo "<br/>";   
   echo date(&#39;Y-m-t&#39;, strtotime(&#39;-1 month&#39;));   
   echo "<br/>";

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There are some problems with the above method, please make the following modifications:

Previous The first day of the month:
　

echo date(&#39;Y-m-d&#39;, strtotime(date(&#39;Y-m-01&#39;) . &#39; -1 month&#39;));
// 计算出本月第一天再减一个月

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The last day of the previous month:
　

echo date(&#39;Y-m-d&#39;, strtotime(date(&#39;Y-m-01&#39;) . &#39; -1 day&#39;)); 
// 计算出本月第一天再减一天

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2. Get the first and last day of the month.

   $BeginDate=date(&#39;Y-m-01&#39;, strtotime(date("Y-m-d")));   
   echo $BeginDate;   echo "<br/>";   
   echo date(&#39;Y-m-d&#39;, strtotime("$BeginDate +1 month -1 day"));   
   echo "<br/>";

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3. Get the year, month, day and number of days of the current day.

   echo " 本月共有:".date("t")."天";   
   echo " 当前年份".date(&#39;Y&#39;);   
   echo " 当前月份".date(&#39;m&#39;);   
   echo " 当前几号".date(&#39;d&#39;);   
   echo "<br/>";

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4. Use functions and arrays to get the first and last days of the month and compare Practical

  function getthemonth($date){
       $firstday = date(&#39;Y-m-01&#39;, strtotime($date));       
       $lastday = date(&#39;Y-m-d&#39;, strtotime("$firstday +1 month -1 day"));       
       return array($firstday,$lastday);
  }   
  $today = date("Y-m-d");   
  $day=getthemonth($today);   
  echo "当月的第一天: ".$day[0]." 当月的最后一天: ".$day[1];  
  echo "<br/>";

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Get the date of this month:

function getMonth($date){
      $firstday = date("Y-m-01",strtotime($date));      
      $lastday = date("Y-m-d",strtotime("$firstday +1 month -1 day"));      
      return array($firstday,$lastday);
}

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　$firstday is the first day of the month, if$date If is 2018-2, $firstday will be 2018-02-01, and then add one month based on $firstday to get 2018-03-01, minus one day is 2018-02-28, it is so convenient to use date() and strtotime().

Get the date of the previous month:

function getlastMonthDays($date){      
$timestamp=strtotime($date);      
$firstday=date(&#39;Y-m-01&#39;,strtotime(date(&#39;Y&#39;,$timestamp).&#39;-&#39;.(date(&#39;m&#39;,$timestamp)-1).&#39;-01&#39;));      
$lastday=date(&#39;Y-m-d&#39;,strtotime("$firstday +1 month -1 day"));      return array($firstday,$lastday);
}

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The date of the previous month needs to get a timestamp first, and then -1 on the month OK, the super smart date() will convert things like 2018-0-1 into 2017-12-01, so cool .

Get the date of the next month:

function getNextMonthDays($date){      
$timestamp=strtotime($date);      
$arr=getdate($timestamp);      
if($arr[&#39;mon&#39;] == 12){            
$year=$arr[&#39;year&#39;] +1;            
$month=$arr[&#39;mon&#39;] -11;            
$firstday=$year.&#39;-0&#39;.$month.&#39;-01&#39;;            
$lastday=date(&#39;Y-m-d&#39;,strtotime("$firstday +1 month -1 day"));
      }else{            
      $firstday=date(&#39;Y-m-01&#39;,strtotime(date(&#39;Y&#39;,$timestamp).&#39;-&#39;.(date(&#39;m&#39;,$timestamp)+1).&#39;-01&#39;));            
      $lastday=date(&#39;Y-m-d&#39;,strtotime("$firstday +1 month -1 day"));
      }      
      return array($firstday,$lastday);
}

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The code for the date of the next month looks a little longer, because date() cannot be converted to something like 2018-13-01 This kind of thing will go back directly to 1970, so we need to deal with the issue of 12 months before, except 12 Just enter month 1 and it will be OK.

Generally speaking, the date function is too powerful.

I have sorted out some of the time problems I encountered during development these days and shared them with everyone. You can take a look and use them if necessary.

1. Get the first and last day of last month.

   echo date(&#39;Y-m-01&#39;, strtotime(&#39;-1 month&#39;));   
   echo "<br/>";   
   echo date(&#39;Y-m-t&#39;, strtotime(&#39;-1 month&#39;));   
   echo "<br/>";

Copy after login

There are some problems with the above method, please make the following modifications:

Previous The first day of the month:
　

echo date(&#39;Y-m-d&#39;, strtotime(date(&#39;Y-m-01&#39;) . &#39; -1 month&#39;));// 计算出本月第一天再减一个月

Copy after login

The last day of the previous month:
　

echo date(&#39;Y-m-d&#39;, strtotime(date(&#39;Y-m-01&#39;) . &#39; -1 day&#39;)); 
// 计算出本月第一天再减一天

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2. Get the first and last day of the month.

   $BeginDate=date(&#39;Y-m-01&#39;, strtotime(date("Y-m-d")));   
   echo $BeginDate;   echo "<br/>";   
   echo date(&#39;Y-m-d&#39;, strtotime("$BeginDate +1 month -1 day"));   
   echo "<br/>";

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3. Get the year, month, day and number of days of the current day.

   echo " 本月共有:".date("t")."天";   echo " 当前年份".date(&#39;Y&#39;);   
   echo " 当前月份".date(&#39;m&#39;);   
   echo " 当前几号".date(&#39;d&#39;);   
   echo "<br/>";

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4. Use functions and arrays to get the first and last days of the month and compare Practical

  function getthemonth($date){
       $firstday = date(&#39;Y-m-01&#39;, strtotime($date));       
       $lastday = date(&#39;Y-m-d&#39;, strtotime("$firstday +1 month -1 day"));       
       return array($firstday,$lastday);
  }   
  $today = date("Y-m-d");   
  $day=getthemonth($today);   
  echo "当月的第一天: ".$day[0]." 当月的最后一天: ".$day[1];   
  echo "<br/>";

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Get the date of this month:

function getMonth($date){
      $firstday = date("Y-m-01",strtotime($date));      
      $lastday = date("Y-m-d",strtotime("$firstday +1 month -1 day"));      
      return array($firstday,$lastday);
}

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Get the date of the previous month:

function getlastMonthDays($date){      
$timestamp=strtotime($date);      
$firstday=date(&#39;Y-m-01&#39;,strtotime(date(&#39;Y&#39;,$timestamp).&#39;-&#39;.(date(&#39;m&#39;,$timestamp)-1).&#39;-01&#39;));      
$lastday=date(&#39;Y-m-d&#39;,strtotime("$firstday +1 month -1 day"));      
return array($firstday,$lastday);
}

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The date of the previous month needs to get a timestamp first, and then -1 on the month OK, the super smart date() will convert things like 2018-0-1 into 2017-12-01, so cool .

Get the date of the next month:

function getNextMonthDays($date){      
$timestamp=strtotime($date);      
$arr=getdate($timestamp);      
if($arr[&#39;mon&#39;] == 12){            
$year=$arr[&#39;year&#39;] +1;            
$month=$arr[&#39;mon&#39;] -11;            
$firstday=$year.&#39;-0&#39;.$month.&#39;-01&#39;;            
$lastday=date(&#39;Y-m-d&#39;,strtotime("$firstday +1 month -1 day"));
      }else{            
      $firstday=date(&#39;Y-m-01&#39;,strtotime(date(&#39;Y&#39;,$timestamp).&#39;-&#39;.(date(&#39;m&#39;,$timestamp)+1).&#39;-01&#39;));            
      $lastday=date(&#39;Y-m-d&#39;,strtotime("$firstday +1 month -1 day"));
      }     
       return array($firstday,$lastday);
}

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Generally speaking, the date function is too powerful.

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