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    SQLite3Stmt::bindParam

    (PHP 5 >= 5.3.0, PHP 7, PHP 8)

    SQLite3Stmt::bindParam — Binds a parameter to a statement variable

    Beschreibung

    public SQLite3Stmt::bindParam(string|int $param, mixed &$var, int $type = SQLITE3_TEXT): bool

    Binds a parameter to a statement variable.

    Achtung

    Before PHP 7.2.14 and 7.3.0, respectively, SQLite3Stmt::reset() must be called after the first call to SQLite3Stmt::execute() if the bound value should be properly updated on following calls to SQLite3Stmt::execute(). If SQLite3Stmt::reset() is not called, the bound value will not change, even if the value assigned to the variable passed to SQLite3Stmt::bindParam() has changed, or SQLite3Stmt::bindParam() has been called again.

    Parameter-Liste

    param

    Either a string (for named parameters) or an int (for positional parameters) identifying the statement variable to which the value should be bound. If a named parameter does not start with a colon (:) or an at sign (@), a colon (:) is automatically preprended. Positional parameters start with 1.

    var

    The parameter to bind to a statement variable.

    type

    The data type of the parameter to bind.

    • SQLITE3_INTEGER: The value is a signed integer, stored in 1, 2, 3, 4, 6, or 8 bytes depending on the magnitude of the value.

    • SQLITE3_FLOAT: The value is a floating point value, stored as an 8-byte IEEE floating point number.

    • SQLITE3_TEXT: The value is a text string, stored using the database encoding (UTF-8, UTF-16BE or UTF-16-LE).

    • SQLITE3_BLOB: The value is a blob of data, stored exactly as it was input.

    • SQLITE3_NULL: The value is a NULL value.

    As of PHP 7.0.7, if type is omitted, it is automatically detected from the type of the var: bool and int are treated as SQLITE3_INTEGER, float as SQLITE3_FLOAT, null as SQLITE3_NULL and all others as SQLITE3_TEXT. Formerly, if type has been omitted, it has defaulted to SQLITE3_TEXT.

    Hinweis:

    If var is null, it is always treated as SQLITE3_NULL, regardless of the given type.

    Rückgabewerte

    Returns true if the parameter is bound to the statement variable, false on failure.

    Changelog

    Version Beschreibung
    7.4.0 param now also supports the @param notation.

    Beispiele

    Beispiel #1 SQLite3Stmt::bindParam() Usage

    This example shows how a single prepared statement with a single parameter binding can be used to insert multiple rows with different values.

    <?php
    $db     = new SQLite3(':memory:');
    $db->exec("CREATE TABLE foo (bar TEXT)");

    $stmt = $db->prepare("INSERT INTO foo VALUES (:bar)");
    $stmt->bindParam(':bar', $bar, SQLITE3_TEXT);

    $bar = 'baz';
    $stmt->execute();

    $bar = 42;
    $stmt->execute();

    $res = $db->query("SELECT * FROM foo");
    while ((    $row = $res->fetchArray(SQLITE3_ASSOC))) {
    var_dump($row);
    }
    ?>

    Das oben gezeigte Beispiel erzeugt folgende Ausgabe:

    array(1) {
  ["bar"]=>
  string(3) "baz"
}
array(1) {
  ["bar"]=>
  string(2) "42"
}

    Siehe auch

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    User Contributed Notes 1 note

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    2
    Anonymous
    10 years ago
    Note that this bindParam needs a variable as the second parameter.
    Use bindValue if you want to bind a value, such an array item.
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