PHP 操作 PostgreSQL数据库

1.

要让PHP支持PostgreSQL,就需要重新编译PHP;

./configure   --prefix=/usr/local/php5  --with-apxs2=/usr/local/apache2/bin/apxs --with-mysql=/usr/local/mysql --with-config-file-path=/usr/local/php5 --with-zlib --enable-mbstring=all --with-mysqli=/usr/local/mysql/bin/mysql_config --with-pdo-mysql=/usr/local/mysql --with-pgsql=/usr/local/pgsql

最后一个参数指明pgsql的路径(注意,这是你自己的pgsql路径!)


然后:

make

sudo make install



2.

如果已经启动了Apache,需要重启Apache:

sudo apachectl restart



3.

为了测试,我们先建一个测试数据库:

在终端输入以下命令:

createdb classdb

psql classdb

create table class(id int, name varchar(20), email varchar(20));



4.

在Apache的Web根目录下新建一个index.php文件,内容如下:

<?php
$conn = pg_connect("host=localhost port=5432 dbname=classdb user=postgresql password=postgresql");
if($conn){
    print "OK! Has connected" . "<br>";
}else{
    print "Error! Connect failure" . "<br>";
}
?>

注意,需要修改pg_connect的相关参数!(5432是pgsql的默认端口,就像mysql的3306端口


显示OK! Has connected. 表示已连接上pgsql。



5.

然后我们在php中插入记录到pgsql中,修改index.php如下:

<?php
$conn = pg_connect("host=localhost port=5432 dbname=classdb user=postgresql password=postgresql");


if($conn)
{
  print "OK! Has connected" . "<br>";
}
else
{
  print "Error! Connect failure" . "<br>";
}
?>

</br>

<form action="index.php" method="post">
  <table>
    <caption><strong>Insert</strong></caption>
    <tr>
      <td><strong>id:</strong></td>
      <td><input type="text" name="id"></input></td>
    <tr>
      <td><strong>name:</strong></td>
      <td><input type="text" name="name"></input></td>
    <tr>
      <td><strong>email:</strong></td>
      <td><input type="text" name="email"></input></td>
    <tr>
    <tr>
      <td><input type="submit" value="INSERT"></input></td>
    </tr>
  </table>
</form>

<?php
  // insert
  $id    = $_POST["id"];
  $name  = $_POST["name"];
  $email = $_POST["email"];
  
  if($id && $name && $email)
  {
    $query = "INSERT INTO class VALUES($id, '$name', '$email')";
    $result = pg_query($query);
  }

  // select
  $query = 'SELECT * FROM class';
  $result = pg_query($query);
?>

<table border="1">
  <tr><th>id</th><th>name</th><th>email</th></tr>

<?php
while ($line = pg_fetch_array($result, null, PGSQL_ASSOC))
{
  echo "<tr>";
  foreach ($line as $col_value)
  {
    echo "<td>$col_value</td>";
  }
  echo "</tr>";
}

echo "</table>";

// 释放结果集
pg_free_result($result);

// 关闭连接
pg_close($conn);

?>


在浏览器中:http://localhost/index.php 即可看到效果。

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