如何在以下语句中添加 Where 子句？

Question

如何使用 CI 在以下查询中添加 where 子句？例如。其中名称 = 'Joe'

<?php
    include 'dbclass.php';
    $db = new DB();
    $users = $db->getRows('users',array('order_by'=>'id DESC'));
    if(!empty($users)): 
        $count = 0; 
        foreach($users as $user): 
            $count++;
?>

dbclass.php 片段：

public function getRows($table,$conditions = array()){
    $sql = 'SELECT ';
    $sql .= array_key_exists("select",$conditions)?$conditions['select']:'*';
    $sql .= ' FROM '.$table;
    if(array_key_exists("where",$conditions)){
        $sql .= ' WHERE ';
        $i = 0;
        foreach($conditions['where'] as $key => $value){
            $pre = ($i > 0)?' AND ':'';
            $sql .= $pre.$key." = '".$value."'";
            $i++;
        }
    }

    if(array_key_exists("order_by",$conditions)){
        $sql .= ' ORDER BY '.$conditions['order_by'];
    }

    if(array_key_exists("start",$conditions) && array_key_exists("limit",$conditions)){
        $sql .= ' LIMIT '.$conditions['start'].','.$conditions['limit'];
    }elseif(!array_key_exists("start",$conditions) && array_key_exists("limit",$conditions)){
        $sql .= ' LIMIT '.$conditions['limit'];
    }

    $result = $this->db->query($sql);

我需要帮助来传递 Where 子句条件。我正在使用 Codeignitor 4.

Answer 1

不确定 codeigniter 部分在哪里，看起来像您编写的代码，所以只需将 where 键添加到您传递的数组中，就像这样

$users = $db->getRows('users',array('where' => ["name => 'Joe']",
                                'order_by'=>'id DESC'));

如何在以下语句中添加 Where 子句？

How to add Where clause in the following statement?

php

codeigniter