发布推送

app/Tools/CollectOffsetLimit.php

@@ -0,0 +1,82 @@
+<?php
+
+namespace App\Tools;
+
+class CollectOffsetLimit
+{
+    private $offset = 0;
+    private $limit = 2000;
+    private $page = 0;
+
+    private $iTotalCount = null;
+
+    public $fCountFun;
+
+
+    function setCountFun(\Closure $fun)
+    {
+        $this->fCountFun = $fun();
+        return $this;
+    }
+
+
+    private function countPage()
+    {
+        if($this->iTotalCount === null && $this->fCountFun !== null){
+            $this->iTotalCount = $this->fCountFun;
+        }
+        if(empty($this->page) && !empty($this->iTotalCount)){
+            $this->page = ceil($this->iTotalCount / $this->limit);
+        }
+    }
+
+    function runWhile(\Closure $fun)
+    {
+        $this->countPage();
+        if($this->iTotalCount === null) $this->iTotalCount = $this->fCountFun;
+        if($this->iTotalCount === 0 | $this->page === 0) return [];
+        for( $iPage = 1; $iPage <= $this->page; $iPage++){
+            $this->offset = ($iPage - 1) * $this->limit;
+            $fun($this->offset,$this->limit);
+        }
+        $this->offset = 0;
+
+    }
+
+    public function getLimit(): int
+    {
+        return $this->limit;
+    }
+
+    public function setLimit(int $limit): void
+    {
+        $this->limit = $limit;
+    }
+
+    public function getOffset(): int
+    {
+        return $this->offset;
+    }
+
+    public function setOffset(int $offset): void
+    {
+        $this->offset = $offset;
+    }
+
+    /**
+     * @return null
+     */
+    public function getITotalCount()
+    {
+        return $this->iTotalCount;
+    }
+
+    /**
+     * @param null $iTotalCount
+     */
+    public function setITotalCount($iTotalCount): CollectOffsetLimit
+    {
+        $this->iTotalCount = $iTotalCount;
+        return $this;
+    }
+}