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Validation Code For Phone Number Using preg_match() in Php

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Phone Number Validation Using preg_match() Below code shows validation of Phone Number 1)Checking whether user input (Phone Number) contains an alphabet in Phone Number          <?php         $mobile_no="123fdgdg890";        if(preg_match("/[a-z][A-Z]/i", $mobile_no))        {   echo "Invalid Phone Number!";        }else{                echo "Valid Phone Number!";        }      ?> Output :Invalid Phone Number! Syntax preg_match("/[a-z][A-Z]/i", $mobile_no) The above syntax will verify whether given phone number is well-formed or not.if it is not, it will show an error message. The    preg_match()  function helps to find whether a given variable is valid or not. 2 )Checking whether user input (Phone Number) contains 10 digits in Phone Number      <?php...
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Writing data to a file using Python

  Writing data to a file using Python Writing data to a file in Python can be done in a variety of ways, depending on the file type and how you want to save the data. Here's a general guide to common formats. 1. Writing Text to a Plain Text File # Writing text data data = "This is some text data." # Open a file in write mode ('w') and write data with open("output.txt", "w") as file:     file.write(data) 2. Writing Data to a CSV File import csv # Data to write data = [     ["Name", "Age", "City"],     ["Rajesh", 25, "India"],     ["Shaun", 30, "San Francisco"],     ["Afzal", 35, "Chicago"] ] # Writing to a CSV file with open("output.csv", "w", newline="") as file:     writer = csv.writer(file)     writer.writerows(data) 3. Writing Data to a JSON File import json # Data to write data = {     "Name": "Alice", ...
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Update and Delete Record Using PHP and MySQL

Update and Delete Record Using PHP and MySQL UPDATE  Query :  To Update data in your Database Syntax: UPDATE Table_name SET column=value WHERE other_column = other_value DELETE Query To delete the record from your Database To delete the data frothe m database you should use the DELETE query, the syntax is given below: DELETE  FROM Table_name WHERE column = value                                                                                                                                                      HAPPY CODING😍
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