SQLite3Stmt::bindValue

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

    SQLite3Stmt::bindValue — Binds the value of a parameter to a statement variable

    Опис

    public SQLite3Stmt::bindValue(string|int $param, mixed $value, int $type = SQLITE3_TEXT): bool

    Binds the value of a parameter to a statement variable.

    Застереження

    Before PHP 7.2.14 and 7.3.0, respectively, once the statement has been executed, SQLite3Stmt::reset() needs to be called to be able to change the value of bound parameters.

    Параметри

    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.

    value

    The value to bind to a statement variable.

    type

    The data type of the value 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 value: 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.

    Зауваження:

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

    Значення, що повертаються

    Returns true if the value is bound to the statement variable, або false в разі помилки.

    Журнал змін

    Версія Опис
    7.4.0 param now also supports the @param notation.

    Приклади

    Приклад #1 SQLite3Stmt::bindValue() example

    <?php
    $db     = new SQLite3(':memory:');

    $db->exec('CREATE TABLE foo (id INTEGER, bar STRING)');
    $db->exec("INSERT INTO foo (id, bar) VALUES (1, 'This is a test')");

    $stmt = $db->prepare('SELECT bar FROM foo WHERE id=:id');
    $stmt->bindValue(':id', 1, SQLITE3_INTEGER);

    $result = $stmt->execute();
    var_dump($result->fetchArray(SQLITE3_ASSOC));
    ?>

    Поданий вище приклад виведе:

    array(1) {
  ["bar"]=>
  string(14) "This is a test"
}

    Прогляньте також

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    User Contributed Notes 4 notes

    up
    30
    zeebinz at gmail dot com
    15 years ago
    Note that this also works with positional placeholders using the '?' token:<?php$stmt = $db->prepare('SELECT * FROM mytable WHERE foo = ? AND bar = ?');$stmt->bindValue(1, 'somestring', SQLITE3_TEXT);$stmt->bindValue(2, 42, SQLITE3_INTEGER);?>Positional numbering starts at 1.
    up
    10
    andrevanzuydam at gmail dot com
    10 years ago
    I just want to say again, Numbering for parameters starts at ONE!This has caught me out quite a few times!
    up
    3
    bohwaz
    10 years ago
    It might be a good idea to feed bindValue the type of the variable manually, or you might encounter weird stuff as the passed value is often treated as SQLITE3_TEXT and results in buggy queries.For example:<?php$st = $db->prepare('SELECT * FROM test WHERE (a+1) = ?');$st->bindValue(1, 2);?>Will never return any result as it is treated by SQLite as if the query was 'SELECT * FROM test WHERE (a+1) = "2"'. Instead you have to set the type manually:<?php$st = $db->prepare('SELECT * FROM test WHERE (a+1) = ?');$st->bindValue(1, 2, \SQLITE3_INTEGER);?>And it will work. This bug is reported in https://bugs.php.net/bug.php?id=68849Here is a simple function to help you make bindValue work correctly:<?phpfunction getArgType($arg){    switch (gettype($arg))    {        case 'double': return SQLITE3_FLOAT;        case 'integer': return SQLITE3_INTEGER;        case 'boolean': return SQLITE3_INTEGER;        case 'NULL': return SQLITE3_NULL;        case 'string': return SQLITE3_TEXT;        default:            throw new \InvalidArgumentException('Argument is of invalid type '.gettype($arg));    }}?>
    up
    1
    vaibhavatul47 at gmail dot com
    9 years ago
    I used following logic to prepare statements, It handles both Values and Arrays ( taking help from bohwaz note) :<?php    function getArgType($arg) {        switch (gettype($arg)) {            case 'double':  return SQLITE3_FLOAT;            case 'integer': return SQLITE3_INTEGER;            case 'boolean': return SQLITE3_INTEGER;            case 'NULL':    return SQLITE3_NULL;            case 'string':  return SQLITE3_TEXT;            default:                throw new \InvalidArgumentException('Argument is of invalid type '.gettype($arg));        }    }foreach ($params as $index => $val) {                // indexing start from 1 in Sqlite statement                if (is_array($val)) {                    $ok = $stmt->bindParam($index + 1, $val);                } else {                    $ok = $stmt->bindValue($index + 1, $val, getArgType($val));                }                                if (!$ok) {                    throw new Exception("Unable to bind param: $val");                }            }?>
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