Implementing array generation in php to generate sql statements to be executed-PHP Tutorial-php.cn

Implementing array generation in php to generate sql statements to be executed

墨辰丷

Release： 2023-03-30 22:28:02

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This article mainly introduces the sql statements to be executed to implement array generation in php. Interested friends can refer to it. I hope it will be helpful to everyone.

Will you encounter such a situation? Every time the data is obtained, there will be a certain difference between the data and the historical version. However, using ThinkPHP's addAll() function, the existing data will be deleted and rewritten. This is obviously not what we want. But writing sql by myself with dozens of fields every time is also boring. How to achieve automatic generation of sql elegantly and easily? So here is the method below.

/**
   * [array_to_sql 根据数组key和value拼接成需要的sql]
   * @param [type] $array  [key, value结构数组]
   * @param string $type  [sql类型insert,update]
   * @param array $exclude [排除的字段]
   * @return [string]     [返回拼接好的sql]
   */
  function array_to_sql($array, $type=&#39;insert&#39;, $exclude = array()){
    
    $sql = &#39;&#39;;
    if(count($array) > 0){
      foreach ($exclude as $exkey) {
        unset($array[$exkey]);//剔除不要的key
      }

      if(&#39;insert&#39; == $type){
        $keys = array_keys($array);
        $values = array_values($array);
        $col = implode("`, `", $keys);
        $val = implode("&#39;, &#39;", $values);
        $sql = "(`$col`) values(&#39;$val&#39;)";
      }else if(&#39;update&#39; == $type){
        $tempsql = &#39;&#39;;
        $temparr = array();
        foreach ($array as $key => $value) {
          $tempsql = "&#39;$key&#39; = &#39;$value&#39;";
          $temparr[] = $tempsql;
        }

        $sql = implode(",", $temparr);
      }
    }
    return $sql;
  }

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