<?php 
    require_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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