(PHP Extension) Generate ULID

See more ULID/UUID Examples

Generate a ULID using a specified timestamp or the current system date timestamp.

Important: Chilkat's ULID functionality was introduced in v9.5.0.94.

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<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

$dt = new CkDateTime();

// Set dt to the current system date/time.
$dt->SetFromCurrentSystemTime();

// Generate a ULID for the current UTC date/time.
// (i.e. the current UTC UNIX-time)
$utc = true;
$ulid = $dt->ulidGenerate($utc);
print $ulid . "\n";

// example result: 01GRGCH4J88RECEN4D4VK4F629

// Generate a ULID using the local timezone's current time.
$utc = false;
$ulid = $dt->ulidGenerate($utc);
print $ulid . "\n";

// example result: 01GRH14AA82EY9A7S99YYF2QDY

// -----------------------------------------------
// To generate a ULID using a specific UNIX timestamp

// For example, the Unix timestamp for Sun, 05 Feb 2023 14:57:46 GMT
// is 1675609066

// For more information about the Epoch Unix Timestamp, see Epoch Unix Timestamp

// To generate a ULID from a specified date/time, set the CkDateTime and then generate the ULID.
$dt2 = new CkDateTime();
$utc = true;
$dt2->SetFromUnixTime($utc,1675609066);
$ulid = $dt2->ulidGenerate($utc);
print $ulid . "\n";

// example result: 01GRH1AJGG3P5K04DJHN3QJCX3

?>