Travis: Test with PHP 7.2 and 7.3

.travis.yml

@@ -2,8 +2,9 @@ language: php
 
 php:
   - 5.6
-  - 7.0
   - 7.1
+  - 7.2
+  - 7.3
 
 before_script:
  - composer install --dev -o -n

src/Fields/Corporation.php

@@ -0,0 +1,88 @@
+<?php
+
+namespace Scriptotek\Marc\Fields;
+
+use Scriptotek\Marc\Record;
+
+class Corporation extends Field implements FieldInterface
+{
+    /**
+     * @var array List of properties to be included when serializing the record using the `toArray()` method.
+     */
+    public $properties = ['type', 'id', 'name', 'subordinate_unit', 'location', 'date', 'number', 'relationship'];
+
+    public static $headingComponentCodes = ['a', 'b', 'c', 'd', 'n'];
+
+    const MAIN_ENTRY= '110';
+    const ADDED_ENTRY = '710';
+
+    public static function get(Record $record)
+    {
+        $objs = [];
+
+        foreach (parent::makeFieldObjects($record, Person::MAIN_ENTRY) as $obj) {
+            $objs[] = $obj;
+        }
+
+        foreach (parent::makeFieldObjects($record, Person::ADDED_ENTRY) as $obj) {
+            $objs[] = $obj;
+        }
+
+        return $objs;
+    }
+
+    public function getType()
+    {
+        return $this->getTag();
+    }
+
+    /**
+     * Return the Authority record control number
+     */
+    public function getId()
+    {
+        // preg_match('/^\((.+)\)(.+)$/', $sf0->getData(), $matches);
+        return $this->sf('0');
+    }
+
+    public function getName()
+    {
+        return $this->sf('a');
+    }
+
+    public function getSubordinateUnit()
+    {
+        return $this->sf('b');
+    }
+
+    public function getLocation()
+    {
+        return $this->sf('c');
+    }
+
+    public function getDate()
+    {
+        return $this->sf('d');
+    }
+
+    public function getNumber()
+    {
+        return $this->sf('n');
+    }
+
+    public function getRelationship()
+    {
+        return $this->sf('4');
+    }
+
+    public function __toString()
+    {
+        $out = [];
+        foreach ($this->getSubfields() as $sf) {
+            if (in_array($sf->getCode(), $this->headingComponentCodes)) {
+                $out[] = $sf->getData();
+            }
+        }
+        return str_replace('/  /', ' ', implode(' ', $out));
+    }
+}