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    Die Klasse SQLite3Result

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

    Einführung

    Eine Klasse, die Ergebnismengen der SQLite-3-Erweiterung bearbeitet.

    Klassenbeschreibung

    class SQLite3Result {
    /* Methoden */
    private __construct()
    public columnName(int $column): string|false
    public columnType(int $column): int|false
    public fetchArray(int $mode = SQLITE3_BOTH): array|false
    public finalize(): bool
    public numColumns(): int
    public reset(): bool
    }

    Inhaltsverzeichnis

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    User Contributed Notes 6 notes

    up
    14
    jonscully at gmail dot com
    14 years ago
    Since SQLite3Result::numRows is unavailable, use:

    <?php
    if ($res->numColumns() && $res->columnType(0) != SQLITE3_NULL) {
            // have rows
    } else {
            // zero rows
    }
    ?>

    Because when there are zero rows:
    * SQLite3Result::fetchArray will return '1'
    * SQLite3Result::numColumns will return '1'
    * Column type for column '0' will be SQLITE3_NULL
    up
    5
    sameers dot public at gmail dot com
    10 years ago
    According to http://www.php.net/manual/en/sqlite3result.columntype.php, and also per my experience, columnType() doesn't return anything other than SQLITE3_NULL. Consequently, the test suggested in the comment that tries to identify whether a column is NULL is incorrect.

    The right thing to do appears to be to test if ($result->fetchArray())[0] == null.
    up
    5
    jan at bootfinder dot co dot uk
    10 years ago
    I use the following code to get num_rows:

    <?php
    ...
    $nrows = 0;
    $result->reset();
    while (    $result->fetchArray())
            $nrows++;
    $result->reset();
    return     $nrows;
    ...
    ?>
    up
    1
    atesin () 6m4i1 ! com
    3 years ago
    in response to jan at bootfinder dot co dot uk (comment #115891) about getting num_rows...

    how about (not tested)... ?

    <?php // do cleans before and after if needed

    for ( $nrows = 0; isarray($result->fetchArray()); ++$nrows );
    return     $nrows;

    ?>
    up
    0
    alan71-at-free-fr
    13 years ago
    Here's a snippet that might help you to write a fetchObject function that is also missing:

    <?php

    function fetchObject($sqlite3result, $objectType = NULL) {
            $array = $sqlite3result->fetchArray();

        if(    is_null($objectType)) {
                $object = new stdClass();
        } else {
                // does not call this class' constructor
                $object = unserialize(sprintf('O:%d:"%s":0:{}', strlen($objectType), $objectType));
        }
       
            $reflector = new ReflectionObject($object);
        for(    $i = 0; $i < $sqlite3result->numColumns(); $i++) {
                $name = $sqlite3result->columnName($i);
                $value = $array[$name];
           
            try {
                    $attribute = $reflector->getProperty($name);
               
                    $attribute->setAccessible(TRUE);
                    $attribute->setValue($object, $value);
            } catch (    ReflectionException $e) {
                    $object->$name = $value;
            }
        }
       
        return     $object;
    }

    ?>

    Heavily inspired of Bergmann's Object Freezer :
    https://github.com/sebastianbergmann/php-object-freezer/blob/master/Object/Freezer.php
    up
    -14
    claudiu at virtuamagic dot com
    14 years ago
    fetchArray() will return bool(false) in case of 0 rows.
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