PHP code example of ck / file_marc_reference

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

ck / file_marc_reference example snippets

// Retrieve a set of MARC records from a file
$records = new File_MARC('data.mrc');

// Iterate through the retrieved records
while ($record = $records->next())
{
 //...
}

// Retrieve a set of MARC records from a file
$records = new File_MARC('data.mrc');

// Iterate through the retrieved records
while ($record = $records->next())
{
    $reference = new File_MARC_Reference('245$a',$record);
}

$reference = new File_MARC_Reference('245$a',$record);

// attribute data
$subfield = $reference->data[0];
print get_class($subfield);               // File_MARC_Subfield
print $subfield->getCode();               // a

// attribute content
print $reference->content[0];             // prints content of subfield a of field 245

// attribute cache
$field = $reference->cache['245'][0];
print get_class($field);                  // File_MARC_Data_Field
$subfield = $reference->cache['245$a'];
print get_class($subfield);               // File_MARC_Subfield

$fields_007 = $record->getFields('007');

$field_306 = $record->getField('306');

$subfields_a = false;

foreach($fields_007 as $field_007)
{
    $firstChar = substr($field_007->getData(),0,1);
    
    if(strpbrk($firstChar,"msv"))
    {
        $subfields_a = $field_306->getSubfields('a');
        break;
    }
}

if($subfields_a)
{
    foreach($subfields_a as $subfield_a)
    {
        echo $subfield_a->getData()."\n";
    }
}

    $reference = new File_MARC_Reference('306$a{007/0=\m|007/0=\s|007/0=\v}',$record);
    
    foreach($reference->content as $subfield_a)
    {
        echo $subfield_a."\n";
    }
    
    // interested in field 007? No problem!
    print get_class($reference->cache['007'][0]);       // File_MARC_Control_Field
    print $reference->cache['007/0'][0];                // prints the first char of first 007 field
    print $reference->cache['007/0'][1];                // prints the first char of second 007 field