67 lines
1.3 KiB
PHP
67 lines
1.3 KiB
PHP
<?php
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namespace SilverStripe\FullTextSearch\Utils;
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use Iterator;
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class MultipleArrayIterator implements Iterator
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{
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protected $arrays;
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protected $active;
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public function __construct()
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{
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$args = func_get_args();
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$this->arrays = array();
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foreach ($args as $arg) {
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if (is_array($arg) && count($arg ?? [])) {
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$this->arrays[] = $arg;
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}
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}
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$this->rewind();
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}
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#[\ReturnTypeWillChange]
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public function rewind()
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{
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$this->active = $this->arrays;
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if ($this->active) {
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reset($this->active[0]);
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}
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}
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#[\ReturnTypeWillChange]
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public function current()
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{
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return $this->active ? current($this->active[0]) : false;
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}
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#[\ReturnTypeWillChange]
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public function key()
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{
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return $this->active ? key($this->active[0]) : false;
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}
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#[\ReturnTypeWillChange]
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public function next()
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{
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if (!$this->active) {
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return;
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}
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if (next($this->active[0]) === false) {
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array_shift($this->active);
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if ($this->active) {
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reset($this->active[0]);
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}
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}
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}
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#[\ReturnTypeWillChange]
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public function valid()
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{
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return $this->active && (current($this->active[0] ?? []) !== false);
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}
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}
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