[PHP]CORS

public static function set_header_for_cors($domain = '*')
{
    header("Access-Control-Allow-Origin: ".$domain);
    header("Access-Control-Allow-Methods: GET, POST");
    header("Access-Control-Allow-Headers: Accept, Content-Disposition, Content-Type, Content-Length, Accept-Encoding");
}

[MySQL]AES 256 CBC

ivはDBに保存しているが16進数文字列でファイルに記述してもよい

SET block_encryption_mode = 'aes-256-cbc'
SET @key_str = SHA2('XXXXXXX',512)
SET @init_vector = RANDOM_BYTES(16) ※INSERTの時だけ実行
INSERT INTO `table_name`(shop,token,iv,created) VALUES(HEX(AES_ENCRYPT('ABC', @key_str,@init_vector)),HEX(AES_ENCRYPT('DEF', @key_str,@init_vector)),HEX(@init_vector),'2024-05-01 11:12:13')
UPDATE `table_name` SET shop = HEX(AES_ENCRYPT(:shop, @key_str,@init_vector)),token = HEX(AES_ENCRYPT(:token, @key_str,@init_vector)),iv = HEX(@init_vector),modified = '2024-05-01 11:12:13' WHERE id = 5
SELECT convert(AES_DECRYPT(UNHEX(shop), @key_str,UNHEX(iv)) USING utf8) AS shop,convert(AES_DECRYPT(UNHEX(token), @key_str,UNHEX(iv)) USING utf8) AS token,created FROM `table_name` WHERE convert(AES_DECRYPT(UNHEX(shop), @key_str,UNHEX(iv)) USING utf8) = 'ABC'

[JavaScript]ブラウザバック判定

isBrowserBack(){
    const perfEntries = performance.getEntriesByType("navigation");
    let result = false;
    perfEntries.forEach((perfEntry) => {
        if(perfEntry.type == 'back_forward'){
            result = true;
        }
    });
    return result;
}

[JavaScript]Promise

getCart(){
    return new Promise((resolve,reject) => {
        const url = 'url';
        fetch(url)
            .then((response)=>{
                if (!response.ok) {
                    throw new Error();
                }
                return response.json();
            })
            .then((json)=>{
                resolve(json);
            })
            .catch((error)=>{
                reject(error);
            });
    });
}

this.getCart()
.then((json)=>{
    
})
.catch((error)=>{

});

[JavaScript]文字列から漢字抽出

文字列から漢字抽出

const str = 'ひらがな小林カタカナ漢字';
const pattern = /(\p{scx=Han}+)/ug;
const matches = str.match(pattern);
console.log(matches);

出力

(2) ['小林', '漢字']

[WordPress]先祖postへのリンクを出力する

function get_parents($post,$parents = array())
{
    if (!empty($post->post_parent)){
        $parent = get_post($post->post_parent);
        array_unshift( $parents, $parent);
        return get_parents( $parent, $parents );
    }
    return $parents;
}
function the_parents($post,$format)
{
    $parents = get_parents($post);
    if(!empty($parents)){
        foreach($parents as $i => $parent){
            $html = $format;
            $html = preg_replace('/%permalink%/',get_permalink($parent->ID),$html);
            $html = preg_replace('/%title%/',esc_html($parent->post_title),$html);
            echo $html;
        }
    }
}