“PHP no está configurado para conectarse a MySQL” Código de respuesta

PHP no está configurado para conectarse a MySQL

Here a mysql helper containing the main functions of the mysql extension. It's easy to understand for a beginner and quite useful because queries are secure. It understands what you want, just write your sql query. I called it mysql_magic.

<?php
// Examples
$nb_affected = mysql_magic('delete from users');
$nb = mysql_magic('select count(*) from users');
$one_row = mysql_magic('select * from users limit 1');
$all_rows = mysql_magic('select * from users where name = ?', 'John');
$id = mysql_magic('insert into users(name,rank) values(?,?)', 'Vincent', 3);
?>

<?php
// Usage: mysql_magic($query [, $arg...]);
function mysql_magic()
{
    global $dblink, $sqlhost, $sqluser, $sqlpass, $sqlbase;
    $narg = func_num_args();
    $args = func_get_args();
   
    if (!$dblink)
    {
        $dblink = mysql_connect( $sqlhost, $sqluser, $sqlpass );
        mysql_select_db( $sqlbase, $dblink );
    }
   
    $req_sql = array_shift($args);
    $req_args = $args;
   
    $req_query = mysql_bind($req_sql, $req_args);
    $req_result = mysql_query($req_query);
   
    if (!$req_result)
    {
        trigger_error(mysql_error());
        return false;
    }
   
    if (startsWith($req_sql, 'delete') || startsWith($req_sql, 'update'))
    {
        return mysql_affected_rows(); // -1 || N
    }
    else if (startsWith($req_sql, 'insert'))
    {
        return mysql_insert_id(); // ID || 0 || FALSE
    }
    else if (endsWith($req_sql, 'limit 1'))
    {
        return mysql_fetch_assoc($req_result); // [] || FALSE
    }
    else if (startsWith($req_sql, 'select count(*)'))
    {
        $line = mysql_fetch_row($req_result);
        return $line[0]; // N
    }
    else
    {
        return mysql_fetch_all($req_result); // [][]
    }
}

function mysql_bind($sql, $values=array())
{
    foreach ($values as &$value) $value = mysql_real_escape_string($value);
    $sql = vsprintf( str_replace('?', "'%s'", $sql), $values);
    return $sql;
}

function mysql_fetch_all($result)
{
    $resultArray = array();
    while(($resultArray[] = mysql_fetch_assoc($result)) || array_pop($resultArray));
    return $resultArray;
}

function startsWith($haystack,$needle,$case=false) {
    if($case){return (strcmp(substr($haystack, 0, strlen($needle)),$needle)===0);}
    return (strcasecmp(substr($haystack, 0, strlen($needle)),$needle)===0);
}

function endsWith($haystack,$needle,$case=false) {
    if($case){return (strcmp(substr($haystack, strlen($haystack) - strlen($needle)),$needle)===0);}
    return (strcasecmp(substr($haystack, strlen($haystack) - strlen($needle)),$needle)===0);
}
?>

Don't forget to set $sqlhost, $sqluser, $sqlpass and $sqlbase.

With help of :
mysql_bind : http://php.net/manual/en/function.mysql-real-escape-string.php#96391
mysql_fetch_all : http://php.net/manual/en/function.mysql-fetch-assoc.php#90030

trigger_error may be enhanced with this tip : http://php.net/manual/en/function.trigger-error.php#98910