PHP method to determine whether a table exists, PHP determines whether a table exists_PHP tutorial

How to determine whether a table exists in php, how to determine whether a table exists in php

The example in this article describes how to determine whether a table exists in php. Share it with everyone for your reference. The details are as follows:

<&#63;php
//方法一
  mysql_connect('localhost','root','2260375') or die('can\'t not connect database');
  if((int)check_table_is_exist('show databases;','test')==1)
  {
    echo '该表存在';
  }
  else
  {
    echo '该表不存在';
  }
  function check_table_is_exist($sql,$find_table)
  {
    $row=mysql_query($sql);
    $database=array();
    $finddatabase=$find_table;
    while ($result=mysql_fetch_array($row,MYSQL_ASSOC))
    {
      $database[]=$result['Database'];
    }
    unset($result,$row);
    mysql_close();
    /*开始判断表是否存在*/
    if(in_array($find_table,$database))
    {
      return true;
    }
    else
    {
      return false;
    }
  }
//////////////////////////////////////////////方法二
  mysql_connect('localhost','root','root');     
  $result = mysql_list_tables('database');     
  $i=0; 
  while($i<mysql_num_rows($result))
  {
  if ('Table_Name' == mysql_tablename($result,$i)) {
    echo '存在';
      break;
  }             
    $i++;   
  }
  echo '不存在';
mysql_close();
//////////////////////////////////////方法三
$data  = array();
$dbname = '你要查询的表名';
mysql_connect('localhost', 'root', '') or die('Cann\'t connect server!');
$result = mysql_query('show databases;');
While($row = mysql_fetch_assoc($result)){
  $data[] = $row['Database'];
}unset($result, $row);
mysql_close();
print_r($data);
if (in_array(strtolower($dbname), $data))
  die('存在');
else
  die('不存在');
&#63;>

I hope this article will be helpful to everyone’s PHP programming design.

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