PHP – 水色（仮）

2024年11月18日2024年11月18日

Ubuntu 24.04.1 LTS と Debian 12 で LAMP Server / LAMP Server on Ubuntu 24.04.1 LTS and Debian 12

環境1

Linux PCName 6.8.0-47-generic #47-Ubuntu SMP PREEMPT_DYNAMIC Fri Sep 27 21:40:26 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 24.04.1 LTS
Release: 24.04
Codename: noble

Linux PCName 6.8.0-47-generic #47-Ubuntu SMP PREEMPT_DYNAMIC Fri Sep 27 21:40:26 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux

No LSB modules are available.

Distributor ID: Ubuntu

Description: Ubuntu 24.04.1 LTS

Release: 24.04

Codename: noble

環境2

Linux PCName 6.1.0-27-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.115-1 (2024-11-01) x86_64 GNU/Linux
No LSB modules are available.
Distributor ID: Debian
Description: Debian GNU/Linux 12 (bookworm)
Release: 12
Codename: bookworm

Linux PCName 6.1.0-27-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.115-1 (2024-11-01) x86_64 GNU/Linux

No LSB modules are available.

Distributor ID: Debian

Description: Debian GNU/Linux 12 (bookworm)

Release: 12

Codename: bookworm

Install Web Server

$ sudo apt install tasksel
$ sudo tasksel

1 2	$ sudo apt install tasksel $ sudo tasksel

– Select Web Server

Install Database

$ sudo apt-get install mariadb-server mariadb-client
$ sudo mysql_secure_installation

1 2	$ sudo apt-get install mariadb-server mariadb-client $ sudo mysql_secure_installation

Install PHP

$ sudo apt install php libapache2-mod-php php-mysql

1	$ sudo apt install php libapache2-mod-php php-mysql

cd /etc/apache2/mods-enabled

ln -s ../mods-available/userdir.conf .
ln -s ../mods-available/userdir.load .
ln -s ../mods-available/rewrite.load .

ln -s ../mods-available/deflate.* .
ln -s ../mods-available/expires.load .
ln -s ../mods-available/headers.load .
ln -s ../mods-available/cgi* .
ln -s ../mods-available/rewrite.load .

cd /etc/apache2/mods-enabled

ln -s ../mods-available/userdir.conf .

ln -s ../mods-available/userdir.load .

ln -s ../mods-available/rewrite.load .

ln -s ../mods-available/deflate.* .

ln -s ../mods-available/expires.load .

ln -s ../mods-available/headers.load .

ln -s ../mods-available/cgi* .

ln -s ../mods-available/rewrite.load .

– リンクの作成に失敗するものもあるが問題ない
– Debian は php version 8.2

$ cd /etc/apache2/mods-enabled
$ sudo vi php8.3.conf

1 2	$ cd /etc/apache2/mods-enabled $ sudo vi php8.3.conf

# php_admin_flag engine Off
php_admin_flag engine On

1 2	# php_admin_flag engine Off php_admin_flag engine On

$ cd /etc/php/8.3/apache2/
$ sudo vi php.ini

1 2	$ cd /etc/php/8.3/apache2/ $ sudo vi php.ini

;display_errors = Off
display_errors = On

1 2	;display_errors = Off display_errors = On

;error_reporting = E_ALL & ~E_DEPRECATED & ~E_STRICT
error_reporting = E_ALL

1 2	;error_reporting = E_ALL & ~E_DEPRECATED & ~E_STRICT error_reporting = E_ALL

Installing modules and more

$ sudo apt install php-mbstring
$ sudo apt install phpmyadmin

1 2	$ sudo apt install php-mbstring $ sudo apt install phpmyadmin

Restart

$ sudo /etc/init.d/apache2 restart

1	$ sudo /etc/init.d/apache2 restart

ユーザーアドレスにアクセスするとエラーになったので、

– http://localhost/~USERNAME/

Forbidden

You don't have permission to access this resource.
Apache/2.4.58 (Ubuntu) Server at localhost Port 80

Forbidden

You don't have permission to access this resource.

Apache/2.4.58 (Ubuntu) Server at localhost Port 80

– before: /home/USERNAME/ rwxr-x— 750
– after: /home/USERNAME/ rwxr-x–x 751

2022年2月13日

PHP で全角半角を考慮して文字列を同じ長さに切りそろえる / Cut the character string to the same length in PHP considering full-width and half-width characters.

問題なく動く模様

<?php

/**
 * 文字列を同じ長さに切りそろえる
 * 文字列 $s を半角=1, 全角=2 として $narrowLength で区切って配列で返す
 */
function mb_strwidth_split($s, $narrowLength) {
    $result = [];
    while (strlen($s)) {
        $lead = mb_strimwidth($s, 0, $narrowLength);
        $s = mb_substr($s, mb_strlen($lead));
        array_push($result, $lead);
    }
    return $result;
}

$s = 'あい0123うえおかきくけこさしすせそたちつてとなにぬねのはひふへほまみむめもやゆよらりるれろわゐゑ123をん';
print_r(mb_strwidth_split($s, 21));
/*
$ php -version
PHP 7.4.3 (cli) (built: Nov 25 2021 23:16:22) ( NTS )
Copyright (c) The PHP Group
Zend Engine v3.4.0, Copyright (c) Zend Technologies
    with Zend OPcache v7.4.3, Copyright (c), by Zend Technologies

$ php mb_strwidth_split.php
Array
(
    [0] => あい0123うえおかきく
    [1] => けこさしすせそたちつ
    [2] => てとなにぬねのはひふ
    [3] => へほまみむめもやゆよ
    [4] => らりるれろわゐゑ123を
    [5] => ん
)
*/

<?php

/**

* 文字列を同じ長さに切りそろえる

* 文字列 $s を半角=1, 全角=2 として $narrowLength で区切って配列で返す

function mb_strwidth_split($s, $narrowLength) {

$result = [];

while (strlen($s)) {

$lead = mb_strimwidth($s, 0, $narrowLength);

$s = mb_substr($s, mb_strlen($lead));

array_push($result, $lead);

}

return $result;

}

$s = 'あい0123うえおかきくけこさしすせそたちつてとなにぬねのはひふへほまみむめもやゆよらりるれろわゐゑ123をん';

print_r(mb_strwidth_split($s, 21));

$ php -version

PHP 7.4.3 (cli) (built: Nov 25 2021 23:16:22) ( NTS )

Zend Engine v3.4.0, Copyright (c) Zend Technologies

with Zend OPcache v7.4.3, Copyright (c), by Zend Technologies

$ php mb_strwidth_split.php

Array

(

[0] => あい0123うえおかきく

[1] => けこさしすせそたちつ

[2] => てとなにぬねのはひふ

[3] => へほまみむめもやゆよ

[4] => らりるれろわゐゑ123を

[5] => ん

)

2020年2月22日2020年3月5日

JAN13桁バーコードを A4 ラベル用紙に印刷してみる / Try printing 13 digits of JAN code on A4 label paper

ひとまず動作

https://memo.silverpigeon.jp/jan13/

See

http://php.birdlab.com/demo/practice/barcode/jan/
https://github.com/dompdf/dompdf/
https://jpn.itlibra.com/article?id=20882
https://s8a.jp/php-security-1
https://s8a.jp/php-security-2
https://developers.google.com/recaptcha/

2020年2月22日2020年2月22日

Google reCAPTCHA v3 を設置してみるメモ

利用開始の為の設定

https://developers.google.com/recaptcha/

利用するウェブサイトのアドレス登録等と使用する2個のキーを取得する

ウェブサイトのフォームに埋め込むキー
サーバー側で使用する秘密キー

下記のウェブサイトを参考に設置します

https://jpn.itlibra.com/article?id=20882

ウェブフォーム

ウェブフォームが表示されたら “grecaptcha.ready()” が実行されて
フォーム要素に token (ここでは、”g-recaptcha-response”) に値が埋め込まれるようにする

<form action="." method="post" name="form1">

    <!-- form items... -->
    <input type="submit" name="send" value="Send" />

    <!-- reCAPTCHA v3 -->
    <input type="hidden" id="g-recaptcha-response" name="g-recaptcha-response" value="" />
    <?php $site_key = 'MY-SITE-KEY'; ?>
    <script src="https://www.google.com/recaptcha/api.js?render=<?php echo $site_key; ?>"></script>
    <script>
    grecaptcha.ready(function() {
        grecaptcha.execute("<?php echo $site_key; ?>", {action: 'homepage'}).then(function(token) {
            document.getElementById('g-recaptcha-response').value=token;
            return false;
        });
    });
    </script>

</form>

<?php $site_key = 'MY-SITE-KEY'; ?>

grecaptcha.ready(function() {

grecaptcha.execute("<?php echo $site_key; ?>", {action: 'homepage'}).then(function(token) {

document.getElementById('g-recaptcha-response').value=token;

return false;

});

</script>

</form>

サーバー側 PHP

フォームに埋め込まれた token “g-recaptcha-response” を受信し
“file_get_contents()” でリクエストを送信して結果を受け取る
“score” 値でロボットかどうか判定する
“googleRecaptchaV3()” をリクエスト処理の中で呼び出す

<?php
// google recaptcha v3
function googleRecaptchaV3() {
	//
	$secretKey = 'SERVERSIDE-SECRET-KEY';
	$gRecaptchaResponse = $_POST["g-recaptcha-response"];
	// $gRecaptchaResponse = get('g-recaptcha-response'); // sanitize
	$reCaptchaUrl = 'https://www.google.com/recaptcha/api/siteverify?secret='.$secretKey.'&response='.$gRecaptchaResponse;
	$response = @file_get_contents($reCaptchaUrl);
	$response = json_decode($response,true);
	if ($response['success'] != true or $response['score'] < 0.5 ){
		// is robot?
		exit;
	}
}

<?php

// google recaptcha v3

function googleRecaptchaV3() {

$secretKey = 'SERVERSIDE-SECRET-KEY';

$gRecaptchaResponse = $_POST["g-recaptcha-response"];

// $gRecaptchaResponse = get('g-recaptcha-response'); // sanitize

$reCaptchaUrl = 'https://www.google.com/recaptcha/api/siteverify?secret='.$secretKey.'&response='.$gRecaptchaResponse;

$response = @file_get_contents($reCaptchaUrl);

$response = json_decode($response,true);

if ($response['success'] != true or $response['score'] < 0.5 ){

// is robot?

exit;

}

2019年5月18日2019年5月18日

指定したウィジェットを WordPress の管理画面に配置し、その中で Youtube ビデオの縦横比を保つ / Placing specific widgets to WordPress Admin Screen and keep the Youtube video aspect ratio within

/wp-content/themes/my-theme/functions.php:

register_sidebar(array(
    'name' => sprintf("%s", __('Admin Screen')),
    'id' => 'admin',
    'description' => '',
    'before_widget' => '<div class="admin widget"><div class="widget-inner">',
    'after_widget' => '</div></div>',
    'before_title' => '<h3 class="widget-title">',
    'after_title' => '</h3>'
));

add_action('wp_dashboard_setup', function () {
    wp_add_dashboard_widget('wp_dashboard_widget', 'May I help you?', function () {
        ob_start();		// start buffering output
        dynamic_sidebar('admin');
        $aspectRatio = 9 / 16 * 100; // 56.25%
        ?>
        <style type="text/css">
        .responsive-video {
            position: relative;
            width: 100%;
            padding-top: <?php echo $aspectRatio; ?>%;
        }
        .responsive-video > iframe {
            position: absolute;
            top: 0;
            right: 0;
            width: 100% !important;
            height: 100% !important;
        }

        #wp_dashboard_widget h2 {
            background-color: #f2ff9c;
        }
        #wp_dashboard_widget h3 {
            font-weight: bold;
        }
        </style>
        <?php
        $buffer = ob_get_contents();	// buffered output to variable
        ob_end_clean();					// end buffering

        // Keep the Youtube video aspect ratio.
        if (preg_match('/<iframe[^>]+?(\/www\.youtube\.com\/)[^>]+?>[^<>]*?<\/iframe>/', $buffer, $matches)) {
            $buffer = str_replace($matches[0], '<div class="responsive-video">'.$matches[0].'</div>', $buffer);
        }

        echo $buffer;
    });
});

register_sidebar(array(

'name' => sprintf("%s", __('Admin Screen')),

'id' => 'admin',

'description' => '',

'before_widget' => '<div class="admin widget"><div class="widget-inner">',

'after_widget' => '</div></div>',

'before_title' => '<h3 class="widget-title">',

'after_title' => '</h3>'

));

add_action('wp_dashboard_setup', function () {

wp_add_dashboard_widget('wp_dashboard_widget', 'May I help you?', function () {

ob_start(); // start buffering output

dynamic_sidebar('admin');

$aspectRatio = 9 / 16 * 100; // 56.25%

.responsive-video {

position: relative;

width: 100%;

padding-top: <?php echo $aspectRatio; ?>%;

}

.responsive-video > iframe {

position: absolute;

top: 0;

right: 0;

width: 100% !important;

height: 100% !important;

}

#wp_dashboard_widget h2 {

background-color: #f2ff9c;

}

#wp_dashboard_widget h3 {

font-weight: bold;

}

</style>

<?php

$buffer = ob_get_contents(); // buffered output to variable

ob_end_clean(); // end buffering

// Keep the Youtube video aspect ratio.

if (preg_match('/<iframe[^>]+?(\/www\.youtube\.com\/)[^>]+?>[^<>]*?<\/iframe>/', $buffer, $matches)) {

$buffer = str_replace($matches[0], '<div class="responsive-video">'.$matches[0].'</div>', $buffer);

}

echo $buffer;

});