Make Convert formatted price for sum to float number in PHP - FILTER_SANITIZE_NUMBER_FLOAT

<?php
$number="7-2f+3.3jk";
var_dump(filter_var($number, FILTER_SANITIZE_NUMBER_FLOAT,FILTER_FLAG_ALLOW_FRACTION));
?>

Output : string(7) "7-2+3.3"

How to check URL and server OR SSL error and using terminal and curl

There are several way to check issue of URL and server OR SSL error and using terminal and curl

curl https://cdn.example.com/assets/storetheme/version2.3/new_theme.js -L

curl -vo /dev/null https://cdn.example.com/assets/storetheme/version2.3/new_theme.js -L

curl -I https://cdn.example.com/assets/storetheme/.htaccess.txt -L

curl -v /dev/null https://cdn.example.com/assets/storetheme/version2.3/new_theme.js -L

How to add Language of custom plugin in Admin dashboard in wordpress

Add text for language like this "<?php echo __('General options', 'roomle'); ?>"

Step 1 : Create plugin like "roomle"

Step 2 : Set domain path into plugin file like following screenshot

Step 3 : Create "roomle.pot" inside /wp-content/plugins/roomle/languages/

Step 4 : Add like following text inside "roomle.pot" file (FYI : Don't add any translation language just add as (msgstr = ""))

msgid ""
msgstr ""
"Project-Id-Version: PACKAGE VERSION\n"
"Report-Msgid-Bugs-To: \n"
"POT-Creation-Date: 2019-06-08 12:08+0100\n"
"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
"Language-Team: LANGUAGE <LL@li.org>\n"
"Language: \n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=CHARSET\n"
"Content-Transfer-Encoding: 8bit\n"
#: functions.php:29
#, php-format
msgid "Roomle"
msgstr ""
#: functions.php:47
#, php-format
msgid "Select"
msgstr ""
#: functions.php:56
msgid "Roomle product type"
msgstr ""

Step 5 : Download the free plugin called Loco Translate from here. Or add directly from the WordPress administration via Plugins > Add New. (https://wordpress.org/plugins/loco-translate/)

Step 6 : Install and Activate Loco plugin

Step 7 : Click on Plugin inner menu of Loco after that click into your plugin from list.

Step 8 : Click on New language

Step 9 : Choose a language which you wish to translate (Here translate from English to Spanish)

Step 10 : See Source text (its from "roomle.pot" ) you need to add text of translate language.

Step 11 : After create all text to Spanish language, Check "/roomle/wp-content/languages/plugins/" directory. your 2 file is created here like "roomle-es_ES.mo" and "roomle-es_ES.po"

Step 12 : If you wish to check so you need to download wordpress in spanish language and setup wordpress and check

Also this answer for following question

• How to Change the Admin plugin Language
• How to add language into your plugin
• How to add language into your custom plugin

AWS SSH and SFTP Disconnected: No supported authentication methods available (server sent: publickey)

Disconnected: No supported authentication methods available (server sent: publickey)

Could not connect to server

Step 1 : Login aws console

Step 2 : Go to instance list

Step 3 : Stop instance which have issue

Step 4 : After stop instance, Click and open "View/Change User Data" (See image)

Step 5 : Add Following code into textarea

 Content-Type: multipart/mixed; boundary="//"
MIME-Version: 1.0
--//
Content-Type: text/cloud-config; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment; filename="cloud-config.txt"
#cloud-config
cloud_final_modules:
- [scripts-user, always]
--//
Content-Type: text/x-shellscript; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment; filename="userdata.txt"
#!/bin/bash
ls -Al
ls -Al /home
ls -Al /home/ubuntu
ls -Al /home/ubuntu/.ssh
sudo cat /home/ubuntu/.ssh/authorized_keys
chown root:root /home
chmod 755 /home
chown ubuntu:ubuntu /home/ubuntu -R
chmod 700 /home/ubuntu
chmod 700 /home/ubuntu/.ssh
chmod 600 /home/ubuntu/.ssh/authorized_keys
ls -Al
ls -Al /home
ls -Al /home/ubuntu
ls -Al /home/ubuntu/.ssh
sudo cat /home/ubuntu/.ssh/authorized_keys
sudo ufw disable
sudo service sshd restart
--//

Step 6 : Click on save button

 Step 7 : Finish! Check your SSH and SFTP detail

How to install letsencrypt SSL certificate on Ubuntu 14.04 apache

Download the Let’s Encrypt Client

Step 1 : sudo add-apt-repository ppa:certbot/certbot

Step 2 : sudo apt-get update

Step 3 : sudo apt-get install python-certbot-apache

Set Up the SSL Certificate

Step 4 : 

sudo certbot --apache -d jaydipkansagra.com
OR
sudo certbot --apache -d jaydipkansagra.com -d www.jaydipkansagra.com

Verifying Certbot Auto-Renewal

Step 5 : sudo certbot renew --dry-run

How to connect ssh using PPK file into Cpanel from terminal Ubuntu

Connection command without PPK file

ssh username@146.66.87.208 -p18765

 Connection command with PPK file

ssh -i privatekey.ppk username@146.66.87.208 -p18765 (if not connect with PPK or give an error like "Load key "privatekey.ppk": invalid format" so please use the direct file without PPK format (See the following screenshot) ) (Supported port : 22, 18765, 18675)

Access denied for user 'root'@'localhost' even password is correct

Error : SQLSTATE[HY000] [2002] Can't connect to local MySQL server through socket

Step 1 : For backup = cp -rfv /var/lib/mysql /var/lib/mysql$(date +%s)

Step 2 : sudo /etc/init.d/mysql stop

Step 3 : sudo mysqld_safe --skip-grant-tables & (If process will not complete after 5 minuts keep this window open and open another terminal window)

Step 4 :  mysql -u root -p 

Step 5 : FLUSH PRIVILEGES;

Step 6 : UPDATE user SET Grant_priv = 1, Super_priv = 1 WHERE user = 'root'

Step 7 : update user set password=PASSWORD("Franki3r0s3") where User='root';

Step 8 : GRANT ALL PRIVILEGES ON . TO 'root'@'localhost' IDENTIFIED BY 'anki8f0s3';

Additional commands : 

1. mysql# show users;
2. mysql# SELECT User FROM mysql.user;
3. ps -e | grep mysqld
4. kill -kill 16300
5. ps -x