--TEST--
mysqli_stmt_bind_param()
--EXTENSIONS--
mysqli
--SKIPIF--
<?php
require_once('skipifconnectfailure.inc');
?>
--FILE--
<?php
    /*
    The way we test the INSERT and data types overlaps with
    the mysqli_stmt_bind_result test in large parts. There is only
    one difference. This test uses mysqli_query()/mysqli_fetch_assoc() to
    fetch the inserted values. This way we test
    mysqli_query()/mysqli_fetch_assoc() for all possible data types
    in this file and we test mysqli_stmt_bind_result() in the other
    test -- therefore the "duplicate" makes some sense to me.
    */
    require_once("connect.inc");

    require('table.inc');

    $stmt = mysqli_stmt_init($link);
    if (!mysqli_stmt_prepare($stmt, "INSERT INTO test(id, label) VALUES (?, ?)"))
        printf("[003] [%d] %s\n", mysqli_stmt_errno($stmt), mysqli_stmt_error($stmt));

    $id = null;
    $label = null;

    /*
    libmysql gives a less descriptive error message but mysqlnd,
    we did not unify the error messages but ignore this slight difference silently
    */
    try {
        if (!false === ($tmp = mysqli_stmt_bind_param($stmt, " ", $tmp)))
            printf("[003d] Expecting boolean/false, got %s/%s\n", gettype($tmp), $tmp);
    } catch (\ArgumentCountError $e) {
        echo $e->getMessage() . \PHP_EOL;
    }

    try {
        if (!false === ($tmp = mysqli_stmt_bind_param($stmt, "", $id, $label)))
            printf("[003a] Expecting boolean/false, got %s/%s\n", gettype($tmp), $tmp);
    } catch (\ValueError $e) {
        echo $e->getMessage() . \PHP_EOL;
    }

    /* TODO: somehwhat undocumented syntax! */
    $param = array($id);
    try {
        if (!false === ($tmp = mysqli_stmt_bind_param($stmt, "is", $param)))
         printf("[003b] Expecting boolean/false, got %s/%s\n", gettype($tmp), $tmp);
    } catch (\ArgumentCountError $e) {
        echo $e->getMessage() . \PHP_EOL;
    }

    $param = array($id, $label, $id);
    try {
        if (!false === ($tmp = mysqli_stmt_bind_param($stmt, " ", $tmp)))
            printf("[003d] Expecting boolean/false, got %s/%s\n", gettype($tmp), $tmp);
    } catch (\ArgumentCountError $e) {
        echo $e->getMessage() . \PHP_EOL;
    }
    try {
        if (!false === ($tmp = mysqli_stmt_bind_param($stmt, "is", $param)))
            printf("[003c] Expecting boolean/false, got %s/%s\n", gettype($tmp), $tmp);
    } catch (\ArgumentCountError $e) {
        echo $e->getMessage() . \PHP_EOL;
    }

    try {
        if (!false === ($tmp = mysqli_stmt_bind_param($stmt, "a", $id)))
            printf("[004] Expecting boolean/false, got %s/%s\n", gettype($tmp), $tmp);
    } catch (\ArgumentCountError $e) {
        echo $e->getMessage() . \PHP_EOL;
    }

    try {
        if (!false === ($tmp = mysqli_stmt_bind_param($stmt, "a", $id, $label)))
            printf("[005] Expecting boolean/false, got %s/%s\n", gettype($tmp), $tmp);
    } catch (\ArgumentCountError $e) {
        echo $e->getMessage() . \PHP_EOL;
    }

    try {
        mysqli_stmt_bind_param($stmt, "aa", $id, $label);
    } catch (ValueError $e) {
        echo $e->getMessage() . \PHP_EOL;
    }

    try {
        mysqli_stmt_bind_param($stmt, "ia", $id, $label);
    } catch (ValueError $e) {
        echo $e->getMessage() . \PHP_EOL;
    }

    try {
        if (!true === ($tmp = mysqli_stmt_bind_param($stmt, "is", $id, $label)))
            printf("[008] Expecting boolean/false, got %s/%s\n", gettype($tmp), $tmp);
    } catch (\ArgumentCountError $e) {
        echo $e->getMessage() . \PHP_EOL;
    }

    if (function_exists("memory_get_usage")) {
        $mem = memory_get_usage();
        for ($i = 0; $i < 20000; $i++) {
            if (!true === ($tmp = mysqli_stmt_bind_param($stmt, "is", $id, $label)))
                printf("[008][$i] Expecting boolean/false, got %s/%s\n", gettype($tmp), $tmp);
        }
        if (($tmp = (memory_get_usage() - $mem)) > 600)
            printf("[009] Function seems to be leaking, because it used %d bytes. During tests it used only 92 bytes.", $tmp);
    }

    $id = 100;
    $label = "z";
    if (!mysqli_stmt_execute($stmt))
        printf("[010] [%d] %s\n", mysqli_stmt_errno($stmt), mysqli_stmt_error($stmt));

    mysqli_stmt_close($stmt);

    if (!($res = mysqli_query($link, "SELECT id, label FROM test WHERE id = " . $id)))
        printf("[011] [%d] %s\n", mysqli_errno($link), mysqli_error($link));
    $row = mysqli_fetch_assoc($res);
    if (($row['id'] != $id) || ($row['label'] != $label))
        printf("[012] Expecting '%s'/%s', got '%s'/%s'!\n", $id, $label, $row['id'], $row['label']);
    mysqli_free_result($res);

    function func_mysqli_stmt_bind_datatype($link, $engine, $bind_type, $sql_type, $bind_value, $offset, $alternative = null) {

        if (!mysqli_query($link, "DROP TABLE IF EXISTS test")) {
            printf("[%03d] [%d] %s\n", $offset, mysqli_errno($link), mysqli_error($link));
            return false;
        }

        if (!mysqli_query($link, sprintf("CREATE TABLE test(id INT NOT NULL, label %s, PRIMARY KEY(id)) ENGINE = %s", $sql_type, $engine))) {
            // don't bail - it might be that the server does not support the data type
            return false;
        }

        if (!$stmt = mysqli_stmt_init($link)) {
            printf("[%03d] [%d] %s\n", $offset + 1, mysqli_errno($link), mysqli_error($link));
            return false;
        }

        if (!mysqli_stmt_prepare($stmt, "INSERT INTO test(id, label) VALUE (?, ?)")) {
            printf("[%03d] [%d] %s\n", $offset + 2, mysqli_stmt_errno($stmt), mysqli_stmt_error($stmt));
            return false;
        }

        $id = 1;
        if (!mysqli_stmt_bind_param($stmt, "i" . $bind_type, $id, $bind_value)) {
            printf("[%03d] [%d] %s\n", $offset + 3, mysqli_stmt_errno($stmt), mysqli_stmt_error($stmt));
            return false;
        }

        if (!mysqli_stmt_execute($stmt)) {
            printf("[%03d] [%d] %s\n", $offset + 4, mysqli_stmt_errno($stmt), mysqli_stmt_error($stmt));
            return false;
        }
        mysqli_stmt_close($stmt);

        if (!$res = mysqli_query($link, "SELECT id, label FROM test")) {
            printf("[%03d] [%d] %s\n", $offset + 5, mysqli_errno($link), mysqli_error($link));
            return false;
        }

        if (!$row = mysqli_fetch_assoc($res)) {
            printf("[%03d] [%d] %s\n", $offset + 5, mysqli_errno($link), mysqli_error($link));
            return false;
        }

        if ($alternative) {
            if (($row['id'] != $id) || (($row['label'] != $bind_value) && ($row['label'] != $alternative))) {
                printf("[%03d] Testing '%s', '%s': expecting '%s'/'%s' (%s), got '%s'/'%s'\n",
                    $offset + 6, $bind_type, $sql_type,
                    $id, $bind_value, gettype($bind_value), $row['id'], $row['label']);
                return false;
            }
        } else {
            if (($row['id'] != $id) || ($row['label'] != $bind_value)) {
                printf("[%03d] Testing '%s', '%s': expecting '%s'/'%s', got '%s'/'%s'\n",
                    $offset + 6, $bind_type, $sql_type,
                    $id, $bind_value, $row['id'], $row['label']);
                return false;
            }
        }

        mysqli_free_result($res);
        return true;
    }

    function func_mysqli_stmt_bind_make_string($len) {

        $ret = '';
        for ($i = 0; $i < $len; $i++)
            $ret .= chr(mt_rand(65, 90));

        return $ret;
    }

    func_mysqli_stmt_bind_datatype($link, $engine, "i", "TINYINT", -11, 20);
    func_mysqli_stmt_bind_datatype($link, $engine, "i", "TINYINT", NULL, 30);
    func_mysqli_stmt_bind_datatype($link, $engine, "i", "TINYINT UNSIGNED", 1, 40);
    func_mysqli_stmt_bind_datatype($link, $engine, "i", "TINYINT UNSIGNED", NULL, 50);

    func_mysqli_stmt_bind_datatype($link, $engine, "i", "BOOL", 1, 60);
    func_mysqli_stmt_bind_datatype($link, $engine, "i", "BOOL", NULL, 70);
    func_mysqli_stmt_bind_datatype($link, $engine, "i", "BOOLEAN", 0, 80);
    func_mysqli_stmt_bind_datatype($link, $engine, "i", "BOOLEAN", NULL, 90);

    func_mysqli_stmt_bind_datatype($link, $engine, "i", "SMALLINT", -32768, 100);
    func_mysqli_stmt_bind_datatype($link, $engine, "i", "SMALLINT", 32767, 110);
    func_mysqli_stmt_bind_datatype($link, $engine, "i", "SMALLINT", NULL, 120);
    func_mysqli_stmt_bind_datatype($link, $engine, "i", "SMALLINT UNSIGNED", 65535, 130);
    func_mysqli_stmt_bind_datatype($link, $engine, "i", "SMALLINT UNSIGNED", NULL, 140);

    func_mysqli_stmt_bind_datatype($link, $engine, "i", "MEDIUMINT", -8388608, 150);
    func_mysqli_stmt_bind_datatype($link, $engine, "i", "MEDIUMINT", 8388607, 160);
    func_mysqli_stmt_bind_datatype($link, $engine, "i", "MEDIUMINT", NULL, 170);
    func_mysqli_stmt_bind_datatype($link, $engine, "i", "MEDIUMINT UNSIGNED", 16777215, 180);
    func_mysqli_stmt_bind_datatype($link, $engine, "i", "MEDIUMINT UNSIGNED", NULL, 190);

    func_mysqli_stmt_bind_datatype($link, $engine, "i", "INTEGER", -2147483648, 200);
    func_mysqli_stmt_bind_datatype($link, $engine, "i", "INTEGER", 2147483647, 210);
    func_mysqli_stmt_bind_datatype($link, $engine, "i", "INTEGER", NULL, 220);
    func_mysqli_stmt_bind_datatype($link, $engine, "i", "INTEGER UNSIGNED", (defined("PHP_INT_MAX")) ? min(4294967295, PHP_INT_MAX) : 1, 230);
    func_mysqli_stmt_bind_datatype($link, $engine, "d", "INTEGER UNSIGNED", 4294967295, 240);
    func_mysqli_stmt_bind_datatype($link, $engine, "i", "INTEGER UNSIGNED", NULL, 250);

    func_mysqli_stmt_bind_datatype($link, $engine, "i", "BIGINT", -1 * PHP_INT_MAX + 1, 260);
    func_mysqli_stmt_bind_datatype($link, $engine, "i", "BIGINT", NULL, 270);
    func_mysqli_stmt_bind_datatype($link, $engine, "i", "BIGINT", PHP_INT_MAX, 280);
    func_mysqli_stmt_bind_datatype($link, $engine, "i", "BIGINT UNSIGNED", NULL, 290);

    func_mysqli_stmt_bind_datatype($link, $engine, "s", "BIGINT", "-9223372036854775808", 900);
    // ?? func_mysqli_stmt_bind_datatype($link, $engine, "d", "BIGINT", -9223372036854775808, 910);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "BIGINT UNSIGNED", "18446744073709551615", 920);

/*
    ??
    func_mysqli_stmt_bind_datatype($link, $engine, "d", "FLOAT", -9223372036854775808 - 1.1, 300);
    func_mysqli_stmt_bind_datatype($link, $engine, "d", "FLOAT UNSIGNED", 18446744073709551615 + 1.1, 320);
    */
    func_mysqli_stmt_bind_datatype($link, $engine, "d", "FLOAT", NULL, 310);
    func_mysqli_stmt_bind_datatype($link, $engine, "d", "FLOAT UNSIGNED ", NULL, 330);
    if (2147483647 == PHP_INT_MAX) {
        func_mysqli_stmt_bind_datatype($link, $engine, "d", "FLOAT UNSIGNED", PHP_INT_MAX, 930, '2.14748e+09');
        func_mysqli_stmt_bind_datatype($link, $engine, "d", "FLOAT", -1 * PHP_INT_MAX + 1, 940, '-2.14748e+09');
    }
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "FLOAT", "-9223372036854775808", 300, '-9.22337e+18');
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "FLOAT UNSIGNED", "18446744073709551615", 320, '1.84467e+19');
    func_mysqli_stmt_bind_datatype($link, $engine, "d", "FLOAT", -10.01, 950);
    func_mysqli_stmt_bind_datatype($link, $engine, "d", "FLOAT UNSIGNED", 10.01, 960);

    func_mysqli_stmt_bind_datatype($link, $engine, "d", "DOUBLE(10,2)", NULL, 350);
    func_mysqli_stmt_bind_datatype($link, $engine, "d", "DOUBLE(10,2) UNSIGNED", NULL, 370);
    func_mysqli_stmt_bind_datatype($link, $engine, "d", "DOUBLE(10,2)", -99999999.99, 340);
    func_mysqli_stmt_bind_datatype($link, $engine, "d", "DOUBLE(10,2) UNSIGNED", 99999999.99, 360);

    /*
    func_mysqli_stmt_bind_datatype($link, $engine, "d", "DOUBLE(10,2)", -99999999.99, 340);
    func_mysqli_stmt_bind_datatype($link, $engine, "d", "DOUBLE(10,2) UNSIGNED", 99999999.99, 360);
        */
    func_mysqli_stmt_bind_datatype($link, $engine, "d", "DECIMAL(10,2)", -99999999.99, 380);
    func_mysqli_stmt_bind_datatype($link, $engine, "d", "DECIMAL(10,2)", NULL, 390);
    func_mysqli_stmt_bind_datatype($link, $engine, "d", "DECIMAL(10,2)", 99999999.99, 400);
    func_mysqli_stmt_bind_datatype($link, $engine, "d", "DECIMAL(10,2)", NULL, 410);

    // don't care about date() strict TZ warnings...
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "DATE", @date('Y-m-d'), 420);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "DATE NOT NULL", @date('Y-m-d'), 430);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "DATE", NULL, 440);

    func_mysqli_stmt_bind_datatype($link, $engine, "s", "DATETIME", @date('Y-m-d H:i:s'), 450);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "DATETIME NOT NULL", @date('Y-m-d H:i:s'), 460);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "DATETIME", NULL, 470);

    func_mysqli_stmt_bind_datatype($link, $engine, "s", "TIMESTAMP", @date('Y-m-d H:i:s'), 480);

    func_mysqli_stmt_bind_datatype($link, $engine, "s", "TIME", @date('H:i:s'), 490);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "TIME NOT NULL", @date('H:i:s'), 500);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "TIME", NULL, 510);

    func_mysqli_stmt_bind_datatype($link, $engine, "s", "YEAR", @date('Y'), 520);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "YEAR NOT NULL", @date('Y'), 530);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "YEAR", NULL, 540);

    $string255 = func_mysqli_stmt_bind_make_string(255);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "CHAR(1)", "a", 550);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "CHAR(255)", $string255, 560);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "CHAR(1) NOT NULL", "a", 570);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "CHAR(1)", NULL, 580);

    $string65k = func_mysqli_stmt_bind_make_string(65535);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "VARCHAR(1)", "a", 590);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "VARCHAR(255)", $string255, 600);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "VARCHAR(65635)", $string65k, 610);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "VARCHAR(1) NOT NULL", "a", 620);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "VARCHAR(1)", NULL, 630);

    func_mysqli_stmt_bind_datatype($link, $engine, "s", "BINARY(1)", "a", 640);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "BINARY(1)", chr(0), 650);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "BINARY(1) NOT NULL", "b", 660);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "BINARY(1)", NULL, 670);

    func_mysqli_stmt_bind_datatype($link, $engine, "s", "VARBINARY(1)", "a", 680);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "VARBINARY(1)", chr(0), 690);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "VARBINARY(1) NOT NULL", "b", 700);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "VARBINARY(1)", NULL, 710);

    func_mysqli_stmt_bind_datatype($link, $engine, "s", "TINYBLOB", "a", 720);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "TINYBLOB", chr(0), 730);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "TINYBLOB NOT NULL", "b", 740);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "TINYBLOB", NULL, 750);

    func_mysqli_stmt_bind_datatype($link, $engine, "s", "TINYTEXT", "a", 760);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "TINYTEXT NOT NULL", "a", 770);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "TINYTEXT", NULL, 780);

    // Note: you cannot insert any blob values this way. But you can check the API at least partly this way
    // Extra BLOB tests are in mysqli_stmt_send_long()
    func_mysqli_stmt_bind_datatype($link, $engine, "b", "BLOB", "", 790);
    func_mysqli_stmt_bind_datatype($link, $engine, "b", "TEXT", "", 800);
    func_mysqli_stmt_bind_datatype($link, $engine, "b", "MEDIUMBLOB", "", 810);
    func_mysqli_stmt_bind_datatype($link, $engine, "b", "MEDIUMTEXT", "", 820);
    func_mysqli_stmt_bind_datatype($link, $engine, "b", "LONGBLOB", "", 830);
    func_mysqli_stmt_bind_datatype($link, $engine, "b", "LONGTEXT", "", 840);

    func_mysqli_stmt_bind_datatype($link, $engine, "s", "ENUM('a', 'b')", "a", 850);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "ENUM('a', 'b')", NULL, 860);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "SET('a', 'b')", "a", 870);
    func_mysqli_stmt_bind_datatype($link, $engine, "s", "SET('a', 'b')", NULL, 880);

    if (mysqli_get_server_version($link) >= 50600)
        func_mysqli_stmt_bind_datatype($link, $engine, "s", "TIME", "13:27:34.123456", 890, "13:27:34");

    $stmt = mysqli_stmt_init($link);
    if (!mysqli_stmt_prepare($stmt, "INSERT INTO test(id, label) VALUES (?, ?)"))
        printf("[2000] [%d] %s\n", mysqli_stmt_errno($stmt), mysqli_stmt_error($stmt));

    $id = null;
    $label = null;
    if (true !== ($tmp = mysqli_stmt_bind_param($stmt, "is", $id, $label)))
        printf("[2001] [%d] %s\n", mysqli_stmt_errno($stmt), mysqli_stmt_error($stmt));

    mysqli_stmt_execute($stmt);

    if (true !== ($tmp = mysqli_stmt_bind_param($stmt, "is", $id, $label)))
        printf("[2002] [%d] %s\n", mysqli_stmt_errno($stmt), mysqli_stmt_error($stmt));

    mysqli_stmt_close($stmt);
    include("table.inc");

    if (!$stmt = mysqli_stmt_init($link))
        printf("[2003] [%d] %s\n", mysqli_errno($link), mysqli_error($link));

    if (!mysqli_stmt_prepare($stmt, "INSERT INTO test(id, label) VALUES (?, ?)"))
        printf("[2004] [%d] %s\n", mysqli_stmt_errno($stmt), mysqli_stmt_error($stmt));

    $id = $label = null;
    if (true !== ($tmp = $stmt->bind_param('is', $id, $label)))
        printf("[2005] Expecting boolean/true got %s/%s, [%d] %s\n",
            gettype($tmp), $tmp,
            $stmt->errno, $stmt->error);

    $id = 100; $label = 'z';
    if (!$stmt->execute())
        printf("[2006] [%d] %s\n", $stmt->errno, $stmt->error);

    if (!$res = mysqli_query($link, "SELECT id, label FROM test WHERE id = 100"))
        printf("[2007] Expecting record 100/z, [%d] %s\n", mysqli_errno($link), mysqli_error($link));

    if (!$row = mysqli_fetch_assoc($res))
        printf("[2008] Expecting row, [%d] %s\n", mysqli_errno($link), mysqli_error($link));

    if ($row['id'] != 100  || $row['label'] != 'z') {
        printf("[2009] Row seems wrong, dumping record\n");
        var_dump($row);
    }
    mysqli_free_result($res);

    $value_list = array(array('id' => 101, 'label' => 'a'), array('id' => 102, 'label' => 'b'));
    if (!mysqli_stmt_prepare($stmt, "INSERT INTO test(id, label) VALUES (?, ?)"))
        printf("[2010] [%d] %s\n", mysqli_stmt_errno($stmt), mysqli_stmt_error($stmt));

        foreach ($value_list as $k => $values) {
        if (!mysqli_stmt_bind_param($stmt, 'is', $values['id'], $values['label'])) {
            printf("[2011] bind_param() failed for id = %d, [%d] %s\n",
                $values['id'], mysqli_stmt_errno($stmt), mysqli_stmt_error($stmt));
            continue;
        }
        if (!$stmt->execute())
            printf("[2012] [%d] execute() failed for id = %d, [%d] %s\n",
                $values['id'], mysqli_stmt_errno($stmt), mysqli_stmt_error($stmt));

        if (!$res = mysqli_query($link, sprintf("SELECT label FROM test WHERE id = %d", $values['id'])))
            printf("[2013] [%d] %s\n", mysqli_errno($link), mysqli_error($link));
        if (!$row = mysqli_fetch_assoc($res))
            printf("[2014] Cannot find row id = %d\n", $values['id']);
        else if (isset($row['label']) && ($values['label'] != $row['label']))
            printf("[2015] Expecting label = %s, got label = %s\n", $values['label'], $row['label']);

        mysqli_free_result($res);
    }

    mysqli_stmt_close($stmt);
    mysqli_close($link);

    print "done!";
?>
--CLEAN--
<?php
    require_once("clean_table.inc");
?>
--EXPECT--
The number of variables must match the number of parameters in the prepared statement
mysqli_stmt_bind_param(): Argument #2 ($types) cannot be empty
The number of elements in the type definition string must match the number of bind variables
The number of variables must match the number of parameters in the prepared statement
The number of elements in the type definition string must match the number of bind variables
The number of variables must match the number of parameters in the prepared statement
The number of elements in the type definition string must match the number of bind variables
mysqli_stmt_bind_param(): Argument #2 ($types) must only contain the "b", "d", "i", "s" type specifiers
mysqli_stmt_bind_param(): Argument #2 ($types) must only contain the "b", "d", "i", "s" type specifiers
done!