pg_insert

(PHP 4 >= 4.3.0, PHP 5, PHP 7, PHP 8)

pg_insert — Insère un tableau dans une table

Description

pg_insert(
    PgSql\Connection $connection,
    string $table_name,
    array $values,
    int $flags = PGSQL_DML_EXEC
): PgSql\Result|string|bool

pg_insert() insère les values dans la table table_name.

Si flags est spécifié, pg_convert() est appliqué à values avec les drapeaux fournit.

Par défaut pg_insert() passe des valeurs brutes. Les valeurs doivent être échappé ou le drapeau PGSQL_DML_ESCAPE doit être spécifié dans flags. PGSQL_DML_ESCAPE met des guillemets et échappe les paramètres/identifiants. Par conséquent, les noms de table/colonnes deviennent sensible à la casse.

Notez que ni l'échappement ni les requêtes préparer peuvent protéger des requêtes LIKE, JSON, Tableaux, Regex, etc. Ces paramètres devraient être traité en fonction de leur contexte. C'est à dire échapper/valider les valeurs.

Liste de paramètres

connection: Une instance PgSql\Connection.
table_name: Nom de la table dans laquelle les lignes seront insérées. La table table_name doit avoir au moins autant de colonnes que values a d'éléments.
values: Un tableau dont les clés sont les noms des champs dans la table table_name, et où les valeurs sont les valeurs de ces champs qui seront insérés.
flags: Toutes combinaisons de constantes parmi PGSQL_CONV_OPTS, PGSQL_DML_NO_CONV, PGSQL_DML_ESCAPE, PGSQL_DML_EXEC, PGSQL_DML_ASYNC ou PGSQL_DML_STRING. Si PGSQL_DML_STRING fait partie du paramètre flags, alors la requête sera retournée. Lorsque la constante PGSQL_DML_NO_CONV ou la constante PGSQL_DML_ESCAPE est définie, aucun appel à la fonction pg_convert() ne sera effectuée en interne.

Valeurs de retour

Cette fonction retourne true en cas de succès ou false si une erreur survient.. Ou retourne une chaîne de caractères si PGSQL_DML_STRING est fournit via flags.

Historique

Version	Description
8.1.0	Retourne désormais une instance de PgSql\Result instance ; auparavant, une ressource était retourné.
8.1.0	Le paramètre `connection` attend désormais une instance de PgSql\Connection ; auparavant, une ressource était attendu.

Exemples

Exemple #1 Exemple avec pg_insert()

<?php 
  $db = pg_connect ('dbname=foo');
  // Ceci est sûr quelque peu, car toutes les valeurs sont échappées
  // Cependant PostgreSSQL supporte les JSON/Tableaux. Ceci ne sont pas
  // sûr ni par échappement ni par les requêtes préparés.
  $res = pg_insert($dbconn, 'post_log', $_POST, PGSQL_DML_ESCAPE);
  if ($res) {
      echo "Les données POSTées ont pu être enregistrées avec succès.\n";
  } else {
      echo "Il y a un problème avec les données.\n";
  }
?>

Voir aussi

pg_convert() - Convertit des valeurs d'un tableaux associatifs en une forme convenable pour des requêtes SQL

add a note

User Contributed Notes 10 notes

down

shane at treesandthings dot com ¶

20 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;

}
?>

down

skippy at zuavra dot net ¶

19 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.

down

jsnell at e-normous dot com ¶

17 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));
 }
}

down

phpuser at ego dot gen dot nz ¶

13 years ago


This function cannot be used to insert a record with only default values - i.e. with an assoc_array of array()

down

Anonymous ¶

3 years ago


$Result = pg_query_params($db,'INSERT INTO table1 (a, b, c) VALUES ($1,$2,$3) RETURNING *', array('1','2','3');
$Row = pg_fetch_assoc($Result);
pg_insert($db, 'table2', $Row);

pg_insert fail silently if one or more fields on table2 have different names than on table1

down

mina86 at tlen dot pl ¶

20 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) . ")";
}
?>

down

-2

excalibur at nospam dot icehouse dot net ¶

18 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

down

-3

rorezende at hotmail dot com ¶

21 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;

   }

down

-4

ANDYCHR17 at HOTMAIL dot COM ¶

18 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.

down

-13

Anonymous ¶

16 years ago


it seems to fail silently if you try to insert somehting with a mis-named column

add a note