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-rw-r--r--classes/IsisRowIterator.php58
1 files changed, 58 insertions, 0 deletions
diff --git a/classes/IsisRowIterator.php b/classes/IsisRowIterator.php
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+<?php
+
+/**
+ * Iterates over all rows from a field result.
+ */
+class IsisRowIterator implements Iterator
+{
+ private $position = 0;
+ private $total = 0;
+
+ /**
+ * Constructor.
+ *
+ * @param $class
+ * Instance of IsisConnector or child class.
+ *
+ * @param $field
+ * Field to iterate over.
+ */
+ public function __construct($class, $field) {
+ $this->total = $class->getRows($field);
+ }
+
+ /**
+ * Rewind the Iterator to the first element.
+ */
+ function rewind() {
+ $this->position = 0;
+ }
+
+ /**
+ * Return the key of the current element.
+ */
+ function key() {
+ return $this->position;
+ }
+
+ /**
+ * Return the current element.
+ */
+ function current() {
+ return $this->position;
+ }
+
+ /**
+ * Move forward to next element.
+ */
+ function next() {
+ ++$this->position;
+ }
+
+ /**
+ * Check if there is a current element after calls to rewind() or next().
+ */
+ function valid() {
+ return $this->position <= $this->total;
+ }
+}