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<?phprequire_once('guid.class.php');
 
 /* make it short */
 use OZ\GUID as GUID;
 
 /* SCHEMA - data schema of your guid, see README or guid.class.php for more instructions */
 $GUID_schema = array(
 'type' => 2,
 'field1' => 4,
 'field2' => 4,
 'field3' => 4,
 'flags1' => 1,
 'flags2' => 1
 );
 
 /* KEY - your secret md5() hash */
 $GUID_key = '7116bfe60a4d7393b2151400ef3a67ea';
 
 if(GUID::init($GUID_schema, $GUID_key)) {
 /* some date */
 $data = array(
 'type' => 1,
 'field1' => 123,
 'field2' => 12,
 'field3' => 1,
 'flags1' => 0,    /* 0000 */
 'flags2' => 6        /* 0111 */
 );
 
 /* data > guid */
 echo 'Data to GUID: <br/>';
 $guid1 = GUID::code($data);
 print_r($data);
 echo ' > ' . $guid1;
 echo '<br/>';
 $data['flags2'] = 5; /* 0110, change data for 1 BIN digit */
 $guid2 = GUID::code($data);
 print_r($data);
 echo ' > ' . $guid2;
 echo '<br/>';
 
 echo '<br/>';
 echo 'GUID to data: <br/>';
 echo $guid1 . ' > ';
 print_r(GUID::decode($guid1));
 echo '<br/>';
 echo $guid2 . ' > ';
 print_r(GUID::decode($guid2));
 echo '<br/>';
 
 echo '<br/>';
 echo 'Fake GUID to data: <br/>';
 $guid3 = '7a368ea2-2eeb-851a-1258-f5dd806f7a08'; /* change last HEX digit */
 $data3 = GUID::decode($guid3);
 echo $guid3 . ' > ';
 print_r(empty($data3) ? 'false' : $data3);
 echo '<br/>';
 $guid3 = '7a368ea2-2eeb-851a-2258-f5dd806f7a09'; /* change one middle HEX digit */
 $data3 = GUID::decode($guid3);
 echo $guid3 . ' > ';
 print_r(empty($data3) ? 'false' : $data3);
 echo '<br/>';
 $guid3 = '7a368ea2-2eec-851a-1258-f5dd806f7a09'; /* change one middle HEX digit */
 $data3 = GUID::decode($guid3);
 echo $guid3 . ' > ';
 print_r(empty($data3) ? 'false' : $data3);
 echo '<br/>';
 }
 else {
 echo 'GUID class is not init';
 }
 
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