Summary of PHP date and time processing functions_PHP tutorial-PHP Tutorial-php.cn

Summary of PHP date and time processing functions_PHP tutorial

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Release： 2016-07-21 15:41:52

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php calculates hours and rounds them into zeros

Copy code The code is as follows:

 
/* Author: Yang Yu yangyu@sina .cn */ 
//The parameter $hours_min is an array, the format of the array is 1:10, and the return value is 1 hour 
/* 
For example: 
$hours_min[0] = '1:10 '; 
$hours_min[1] = '2:30'; 
echo hours_sum($hours_min); 

The input is 4, which means a total of 4 hours

*/ 
function hours_sum($hours_min){ 

if (!is_array($hours_min)) return false; 

$tmp_arr = array(); 
foreach ($hours_min as $ v){ 
$tmp_arr = explode(':',$v); 
$hour[] = $tmp_arr[0]; 
$min[] = $tmp_arr[1]; 
 } 

$hours = array_sum($hour); 
$mins = array_sum($min); 

$mins = $mins >= 10 ? str_pad($mins, 2 , 0, STR_PAD_RIGHT) : $mins; 
$hours += floor($mins/60); 
$hours += $mins%60 >= 30 ? 1 : 0; 
return $hours ; 
} 

Convert date to day of week

Copy code The code is as follows:

/* Author: Yang Yu */ 
//The input $data parameter is, yy/mm/dd or yy-mm-dd, return the day of the week
function getWeekDay( $date) { 
$date = str_replace('/','-',$date); 
$dateArr = explode("-", $date); 
return date("N", mktime(0,0,0,$dateArr[1],$dateArr[2],$dateArr[0])); 
} 

PHP converts seconds into hours and minutes ( The format is ** hours ** minutes)

Copy code The code is as follows:

/* Author: Yang Yu */ 
//Convert seconds (not timestamp) into ** hours ** minutes 
function sec2time($sec){ 

$sec = round($sec /60); 
if ($sec >= 60){ 
$hour = floor($sec/60); 
$min = $sec%60; 
$res = $hour .' hours'; 
$min != 0 && $res .= $min.' minutes'; 
}else{ 
$res = $sec.' minutes'; 
} 
return $res; 
} 