Converting String to Time without the date in php

Question

I am parsing the string "11:00 PM" to the database. I want to convert the string to military time as 23:00 and write to the database.

I tried with the below:

$traveltime = "11:00 PM";
$contraveltime = date(strtotime("%H:%i",'$traveltime'));

I get the error

A PHP Error was encountered
Severity: Warning
Message: date() expects parameter 2 to be long, string given
Filename: views/addtrip_individual.php
Line Number: 332

Line 332 is where the second code line is.

How do I make this work?

You might want to take a look at [DateTime::createFromFormat()](http://php.net/manual/en/datetime.createfromformat.php) — Manuel Mannhardt, Oct 18 '16 at 15:48
Possible duplicate of [Convert this string to timestamp PHP](http://stackoverflow.com/questions/19346858/convert-this-string-to-timestamp-php) — Manuel Mannhardt, Oct 18 '16 at 15:50
Also irrelevant, 23:00 is not military time it's 24h time. 2300 is military time. — apokryfos, Oct 18 '16 at 15:51
This >>> http://php.net/manual/en/language.types.string.php#language.types.string.syntax.single — AbraCadaver, Oct 18 '16 at 15:52

score 5 · Answer 1 · answered Oct 18 '16 at 15:54

The format argument belongs in the date function, not in strtotime. And you need to eliminate the single quotes around $traveltime, or you'll just be evaluating the literal string '$traveltime'. Also, the % characters shouldn't be used in the format string. Those are used for printf, etc. and aren't required here.

$contraveltime = date("H:i", strtotime($traveltime));

score 2 · Answer 2 · answered Oct 18 '16 at 15:51

2

Please start with looking at the date manual. One simple way, that I would use is:

echo date("G:i", strtotime("3:00 PM"));   // 15:00

Since 1500 is a military time, not 15:00, you might need to do:

echo date("Gi", strtotime("3:00 PM"));    // 1500

answered Oct 18 '16 at 15:51

Praveen Kumar Purushothaman

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score 1 · Answer 3 · edited May 23 '17 at 12:16

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you can do some think like

// 24-hour time to 12-hour time 
$time_in_12_hour_format  = date("g:i a", strtotime("13:30"));

// 12-hour time to 24-hour time 
$time_in_24_hour_format  = date("H:i", strtotime("1:30 PM"));

Ref link :How do you convert between 12 hour time and 24 hour time in PHP?

edited May 23 '17 at 12:16

Community

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answered Oct 18 '16 at 15:51

Vision Coderz

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score 0 · Answer 4 · answered Oct 18 '16 at 15:53

0

maybe the error is just the way you call the functions try this way

$traveltime = "11:00 PM";
$contraveltime = date('H:i', strtotime($traveltime));

answered Oct 18 '16 at 15:53

cmnardi

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thanks! this worked , I just positioned the elements wrongly! – user396123 Oct 18 '16 at 15:56

score 0 · Answer 5 · edited Oct 28 '20 at 21:26

0

Its show error because date function first parameter must date format

but you given strtotime function

for correct result please follow below code

$traveltime = "11:00 PM";
$contraveltime = date('H:i',strtotime($traveltime));
echo $contraveltime;

and out put will be like below code

23:00

now you store $contraveltime into database

edited Oct 28 '20 at 21:26

desertnaut

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answered Oct 18 '16 at 16:07

Akbor

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Converting String to Time without the date in php

5 Answers5