How to display a date as iso 8601 format with PHP

Question

I m trying to display a datetime from my MySQL database as an iso 8601 formated string with PHP but it s coming out wrong   17 Oct 2008 is coming out as  1969-12-31T18 33 28-06 00 which is clearly not correct  the year should be 2008 not 1969   This is the code I m using    lt    date  c    post 3     gt     post 3  is the datetime  CURRENT TIMESTAMP  from my MySQL database   Any ideas what s going wrong

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Procedural style    echo date format date create  17 Oct 2008     c       Output   2008-10-17T00 00 00 02 00   Object oriented style     formatteddate   new DateTime  17 Oct 2008    echo  datetime- gt format  c       Output   2008-10-17T00 00 00 02 00   Hybrid 1    echo date format new DateTime  17 Oct 2008     c       Output   2008-10-17T00 00 00 02 00   Hybrid 2    echo date create  17 Oct 2008  - gt format  c       Output   2008-10-17T00 00 00 02 00     Notes    1  You could also use  Y-m-d TH i sP  as an alternative to  c  for your format   2  The default time zone of your input is the time zone of your server  If you want the input to be for a different time zone  you need to set your time zone explicitly  This will also impact your output  however    echo date format date create  17 Oct 2008  0800     c       Output   2008-10-17T00 00 00 08 00   3  If you want the output to be for a time zone different from that of your input  you can set your time zone explicitly    echo date format date create  17 Oct 2008  - gt setTimezone new DateTimeZone  America New York      c       Output   2008-10-16T18 00 00-04 00

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Using the DateTime class available in PHP version 5 2 it would be done like this    datetime   new DateTime  17 Oct 2008    echo  datetime- gt format  c      See it in action  As of PHP 5 4 you can do this as a one-liner   echo  new DateTime  17 Oct 2008   - gt format  c

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The second argument of date is a UNIX timestamp  not a database timestamp string   You need to convert your database timestamp with strtotime    lt    date  c   strtotime  post 3      gt

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The problem many times occurs with the milliseconds and final microseconds that many times are in 4 or 8 finals  To convert the DATE to ISO 8601  date DATE ISO8601   these are one of the solutions that works for me      In this form it leaves the date as it is without taking the current date as a reference  dt   new DateTime    echo  dt- gt format  Y-m-d TH i s    substr  dt- gt format  u   0 3   Z      return- gt  2020-05-14T13 35 55 191Z     In this form it takes the reference of the current date echo date  Y-m-d TH i s  substr  string microtime    1  4    Z    return- gt  2020-05-14T13 35 55 191Z     Various examples   date in    2020-05-25 22 12 03 056    dt   new DateTime  date in   echo  dt- gt format  Y-m-d TH i s    substr  dt- gt format  u   0 3   Z      return- gt  2020-05-25T22 12 03 056Z    In this form it takes the reference of the current date echo date  Y-m-d TH i s  substr  string microtime    1  4    Z  strtotime  date in       return- gt  2020-05-25T14 22 05 188Z

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For pre PHP 5   function iso8601  time false        if   time   time time        return date  Y-m-d    time     T    date  H i s    time     00 00

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Here is the good function for pre PHP 5  I added GMT difference at the end  it s not hardcoded   function iso8601  time false        if   time     false   time   time         date   date  Y-m-d TH i sO    time       return  substr  date  0  strlen  date -2      substr  date  -2

[php] How to display a date as iso 8601 format with PHP

Procedural style :

Object oriented style :

Hybrid 1 :

Hybrid 2 :

Notes :

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