mysql_fetch_array

    (PHP 4, PHP 5)

    mysql_fetch_array — Fetch a result row as an associative array, a numeric array, or both

    Aviso

    Esta extensão tornou-se defasada a partir do PHP 5.5.0 e foi removida no PHP 7.0.0. Em vez disso, as extensões MySQLi ou PDO_MySQL devem ser usadas. Veja também o guia MySQL: escolhendo uma API. Alternativas a esta função incluem:

    Descrição

    mysql_fetch_array(resource$result, int$result_type = MYSQL_BOTH): array

    Returns an array that corresponds to the fetched row and moves the internal data pointer ahead.

    Parâmetros

    result

    O resource do resultado que está sendo avaliado. Este resultado vem de uma chamada a mysql_query().

    result_type

    The type of array that is to be fetched. It's a constant and can take the following values: MYSQL_ASSOC, MYSQL_NUM, and MYSQL_BOTH.

    Valor Retornado

    Returns an array of strings that corresponds to the fetched row, or false if there are no more rows. The type of returned array depends on how result_type is defined. By using MYSQL_BOTH (default), you'll get an array with both associative and number indices. Using MYSQL_ASSOC, you only get associative indices (as mysql_fetch_assoc() works), using MYSQL_NUM, you only get number indices (as mysql_fetch_row() works).

    If two or more columns of the result have the same field names, the last column will take precedence. To access the other column(s) of the same name, you must use the numeric index of the column or make an alias for the column. For aliased columns, you cannot access the contents with the original column name.

    Exemplos

    Exemplo #1 Query with aliased duplicate field names

    SELECT table1.field AS foo, table2.field AS bar FROM table1, table2

    Exemplo #2 mysql_fetch_array() with MYSQL_NUM

    <?php
    mysql_connect    ("localhost", "mysql_user", "mysql_password") or
    die(    "Could not connect: " . mysql_error());
    mysql_select_db("mydb");

    $result = mysql_query("SELECT id, name FROM mytable");

    while (    $row = mysql_fetch_array($result, MYSQL_NUM)) {
    printf("ID: %s Name: %s", $row[0], $row[1]);
    }

    mysql_free_result($result);
    ?>

    Exemplo #3 mysql_fetch_array() with MYSQL_ASSOC

    <?php
    mysql_connect    ("localhost", "mysql_user", "mysql_password") or
    die(    "Could not connect: " . mysql_error());
    mysql_select_db("mydb");

    $result = mysql_query("SELECT id, name FROM mytable");

    while (    $row = mysql_fetch_array($result, MYSQL_ASSOC)) {
    printf("ID: %s Name: %s", $row["id"], $row["name"]);
    }

    mysql_free_result($result);
    ?>

    Exemplo #4 mysql_fetch_array() with MYSQL_BOTH

    <?php
    mysql_connect    ("localhost", "mysql_user", "mysql_password") or
    die(    "Could not connect: " . mysql_error());
    mysql_select_db("mydb");

    $result = mysql_query("SELECT id, name FROM mytable");

    while (    $row = mysql_fetch_array($result, MYSQL_BOTH)) {
    printf ("ID: %s Name: %s", $row[0], $row["name"]);
    }

    mysql_free_result($result);
    ?>

    Notas

    Nota: Performance

    An important thing to note is that using mysql_fetch_array() is not significantly slower than using mysql_fetch_row(), while it provides a significant added value.

    Nota: Os nomes de campos retornados por esta função diferenciam maiúsculas e minúsculas.

    Nota: Esta função define campos NULL como o valor null do PHP.

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