How to convert h:m:s to float and float to h:m:s php-CodePudding

I want to convert time value with second to float and than do some calculation on it and convert it again to time value using php

I have used the function describe below but it has only hour and minute calculation it display wrong amount if second value is there.

i found this function from time conversion to float

I have used function for convert time to float is

function hours_tofloat($val){
    if (empty($val)) {
        return 0;
    }
    $parts = explode(':', $val);
    return $parts[0]   floor(($parts[1]/60)*100) / 100;
}

hours_tofloat("00:02:37"); if i use above function for 00:02:37 time value it gives me wrong float no 0.03 because above function dose not have option for second. so help me and guide how to calculate it

CodePudding user response：

Modify your code as follows. It will return the time in seconds.

$val = '00:02:37';
function hours_tofloat($val){
    if (empty($val)) {
        return 0;
    }
    $parts = explode(':', $val);
    return (int) (($parts[0] * 60 *60)   $parts[1]*60   $parts[2]);
}

echo hours_tofloat($val);

Output: 00:02:37 = 157

It returns

157

CodePudding user response：

Why don't you use EPOCH time routines? Epoch time is an integer representing seconds based on 1 Jan 1970. You don't need the date part so you can have the following approach:

<?php
  $time = '00:02:37';
  $date = new DateTime("1970-01-01T$time 00:00");
  echo 'Seconds = '.$date->format('U');
?>

Output

Seconds = 157

CodePudding user response：

$val = "00:02:37";
/* function converts time value to float */
function time_to_float($val){
 $parts = explode(':', $val);
 $hour_val = 0;
 $hour_val = $parts[0];
 $min_val    = $parts[1]; 
 $second_val = $parts[2]; 
 return ($hour_val  (($min_val* 1/60)) ($second_val * 1/3600));
}
$value = time_to_float($val);// 0.043611111111111

/* function to convert float to time */
$res = float_to_time($value);//00:02:37

 function float_to_time($value){
    $value1 = explode('.',$value);
    $hours = $value1[0];
    $min_in_float = ($value - $hours) * 60/1;
    $min_val = explode('.',$min_in_float);
    $min_val = $min_val[0];
    $min_in_float = $min_in_float - $min_val;
    $second_val = $min_in_float * 60/1;
    $second_val = round($second_val);
    if($hours < 10){
        $hours = "0".$hours;
    }
    if($min_val < 10){
        $min_val = "0".$min_val;
    }
    if($second_val < 10){
        $second_val = "0".$second_val;
    }
    
    return $hours.":".$min_val.":".$second_val;
 }

I got reference about the calculation from

https://www.calculatorsoup.com/calculators/time/time-to-decimal-calculator.php https://www.calculatorsoup.com/calculators/time/decimal-to-time-calculator.php