PHP 5.4.31 Released

pg_insert

(PHP 4 >= 4.3.0, PHP 5)

pg_insert テーブルに配列を挿入する

説明

mixed pg_insert ( resource $connection , string $table_name , array $assoc_array [, int $options = PGSQL_DML_EXEC ] )

pg_insert() は、 table_name で指定したテーブルに assoc_array の値をを挿入します。 options が指定されている場合、そのオプションと ともに pg_convert()assoc_array に適用されます。

パラメータ

connection

PostgreSQL データベースの接続リソース。

table_name

行を挿入するテーブルの名前。テーブル table_name は、少なくとも assoc_array の要素数ぶんのカラムを 保持している必要があります。

assoc_array

テーブル table_name のフィールド名をキーに、 挿入する内容を値にもつ配列。

options

PGSQL_CONV_OPTSPGSQL_DML_NO_CONVPGSQL_DML_ESCAPEPGSQL_DML_EXECPGSQL_DML_ASYNC あるいは PGSQL_DML_STRING を組み合わせた数。 PGSQL_DML_STRINGoptions に含まれていた場合、 クエリ文字列が返されます。 PGSQL_DML_NO_CONV あるいは PGSQL_DML_ESCAPE が設定されている場合は、内部的に pg_convert() を呼びません。

返り値

成功した場合に TRUE を、失敗した場合に FALSE を返します。 optionsPGSQL_DML_STRING が渡された場合は文字列を返します。

例1 pg_insert() の例

<?php 
  $dbconn 
pg_connect('dbname=foo');
  
// これは安全です。なぜなら $_POST は自動的に変換されるからです。
  
$res pg_insert($dbconn'post_log'$_POST);
  if (
$res) {
      echo 
"POST data is successfully logged\n";
  } else {
      echo 
"User must have sent wrong inputs\n";
  }
?>

変更履歴

バージョン 説明
5.6.0 実験的な関数ではなくなりました。定数 PGSQL_DML_ESCAPE が追加されました。 TRUE/FALSENULL をサポートするようになりました。
5.5.3/5.4.19 table_name に対する SQL インジェクション、そして識別子に対する間接的な SQL インジェクションの問題を修正しました。

参考

  • pg_convert() - 連想配列の値を、SQL 文として実行可能な形式に変換する

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User Contributed Notes 9 notes

up
2
shane at treesandthings dot com
10 years ago
Returns SQL statement, slight improvement on the code from 'rorezende at hotmail dot com'.  This version adds bool values correctly.It also checks to make sure there is actually a value in the array before including it in the sql statement. (ie: null values or empty strings won't be added to the sql statement)

<?PHP
function db_build_insert($table,$array)
{

  
$str = "insert into $table ";
  
$strn = "(";
  
$strv = " VALUES (";
   while(list(
$name,$value) = each($array)) {

       if(
is_bool($value)) {
               
$strn .= "$name,";
               
$strv .= ($value ? "true":"false") . ",";
                continue;
        };

       if(
is_string($value)) {
               
$strn .= "$name,";
               
$strv .= "'$value',";
                continue;
        }
       if (!
is_null($value) and ($value != "")) {
               
$strn .= "$name,";
               
$strv .= "$value,";
                continue;
       }
   }
  
$strn[strlen($strn)-1] = ')';
  
$strv[strlen($strv)-1] = ')';
  
$str .= $strn . $strv;
   return
$str;

}
?>
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0
phpuser at ego dot gen dot nz
2 years ago
This function cannot be used to insert a record with only default values - i.e. with an assoc_array of array()
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0
Anonymous
5 years ago
it seems to fail silently if you try to insert somehting with a mis-named column
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0
jsnell at e-normous dot com
6 years ago
If you need schema support, this function will do something similar to pg_insert:

function pg_insert_with_schema($connection, $table, $updates)
{
$schema = 'public';
if (strpos($table, '.') !== false)
    list($schema, $table) = explode('.', $table);

    if (count($updates) == 0) {
        $sql = "INSERT INTO $schema.\"$table\" DEFAULT VALUES";
            return pg_query($sql);
        } else {
$sql = "INSERT INTO $schema.\"$table\" ";
           
$sql .= '("';
$sql .= join('", "', array_keys($updates));
$sql .= '")';

$sql .= ' values (';
for($i = 0; $i < count($updates); $i++)
   $sql .= ($i != 0? ', ':'').'$'.($i+1);
$sql .= ')';
return pg_query_params($connection, $sql, array_values($updates));
}
}
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0
excalibur at nospam dot icehouse dot net
7 years ago
Today at work I isolated a problem I was having with this function to how I was formatting the date.  I was assigning the date in my code as follows:

$today = date( "Ymd" ); // ISO 8601

This format is acceptable to PostgreSQL, as verified by their documentation and buy tests using psql.  However, to make it work in my code, I had to make the following change:

$today = date( "Y-m-d" ); // also ISO 8601 format
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0
ANDYCHR17 at HOTMAIL dot COM
8 years ago
Had a few issues while trying to run this in PHP 4.4.0:

- I could not get it to work with column names that are SQL reserved words (example: desc, order). I was forced to change the column names in order to use the function. I could not put the column names in quotes, because that caused pg_convert() to fail.

- Function was returning false until I passed the PGSQL_DML_EXEC option.
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0
skippy at zuavra dot net
9 years ago
Beware of the following: pg_insert() and pg_update() are adding slashes to all character-like fields they work with. This makes them SQL injection super-safe, but there are unwanted consequences, as follows:

If you have a regular setup with magic_quotes_gcp=On, and you use pg_insert() or pg_update(), you will end up with fields that look as if you used addslashes() twice. To solve this, you can use stripslashes() on the data just before using it with pg_insert() or pg_update().

There's another alternative, which seems better to me. Why make yourself crazy all over the code, adding slashes, stripping slashes, worrying whether magic_quotes_gpc is on or off and so on and so forth? Why do this, when the only place you actually need those slashes is right when you push the data into the database?

So why not get rid of your addslashes() and stripslashes() from all over your code, and turn magic_quotes_gcp off. As long as you always use pg_insert() and pg_update() to do your DB work, you're SQL-injection safe AND slash-headache free.
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0
mina86 at tlen dot pl
10 years ago
Next version :) My version checks whether value is bool, null, string or numeric and if one of the values is not function returns false if not. null values are inserted as NULL, bool as true or false and strings are add-shlashed before adding to query string. Note, that this function is not safe. SQL injection is possible with column names if you use $_POST or something similar as a $array.

<?php
function db_build_insert($table, $array) {
  if (
count($array)===0) return false;
 
$columns = array_keys($array);
 
$values = array_values($array);
  unset(
$array);

  for (
$i = 0, $c = count($values); $i$c; ++$i) {
    if (
is_bool($values[$i])) {
     
$values[$i] = $values[$i]?'true':'false';
    } elseif (
is_null($values[$i])) {
     
$values[$i] = 'NULL';
    } elseif (
is_string($values[$i])) {
     
$values[$i] = "'" . addslashes($values[$i]) . "'";
    } elseif (!
is_numeric($values[$i])) {
      return
false;
    }
  }

  return
"INSERT INTO $table ($column_quote" . implode(', ', $columns) .
   
") VALUES (" . implode(', ', $values) . ")";
}
?>
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0
rorezende at hotmail dot com
11 years ago
Time is money, then I write a function similar to pg_insert in PHP (only output sql statement) :

   function db_mount_insert($table,$array) {

    $str = "insert into $table (";
    while(list($name,$value) = each($array)) {       
        $str .= "$name,";       
    }
    $str[strlen($str)-1] = ')';
    $str .= " values (";
    reset($array);
    while(list($name,$value) = each($array)) {       
        if(is_string($value))
            $str .= "'$value',";
        else
            $str .= "$value,";
    }
    $str[strlen($str)-1] = ')';
    $str .= ";"    ;
   
    return $str;

   }
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