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PHP Exercises: Replace a string "Python" with "PHP" and "Python" with "PHP" in a given string

PHP: Exercise-63 with Solution

Write a PHP program to replace a string "Python" with "PHP" and "Python" with " PHP" in a given string.

Input: English letters (including single byte alphanumeric characters, blanks, symbols) are given on one line. The length of the input character string is 1000 or less.

Pictorial Presentation:

PHP: Replace a string 'Python' with 'PHP' and 'Python' with 'PHP' in a given string.

Sample Solution: -

PHP Code:

<?php
$str = trim(fgets(STDIN));
$str = str_replace(array('Python', 'PHP'), array('@ython', 'Python'), $str);
echo str_replace('@ython', 'PHP', $str), PHP_EOL;

?>

Sample Input:
PHP is popular than Python

Sample Output:

Python is popular than PHP.

Flowchart:

Flowchart: Reads the two adjoined sides and the diagonal of a parallelogram and check whether the parallelogram is a rectangle or a rhombus.

PHP Code Editor:

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Previous: Write a PHP program which reads the two adjoined sides and the diagonal of a parallelogram and check whether the parallelogram is a rectangle or a rhombus.
Next: Write a PHP program to find the difference between the largest integer and the smallest integer which are created by 8 numbers from 0 to 9. The number that can be rearranged shall start with 0 as in 00135668.

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PHP: Tips of the Day

Why shouldn't I use mysql_* functions in PHP?

The MySQL extension:

  • Is not under active development
  • Is officially deprecated as of PHP 5.5 (released June 2013).
  • Has been removed entirely as of PHP 7.0 (released December 2015)
  • This means that as of 31 Dec 2018 it does not exist in any supported version of PHP. If you are using a version of PHP which supports it, you are using a version which doesn't get security problems fixed.
  • Lacks an OO interface
  • Doesn't support:
    • Non-blocking, asynchronous queries
    • Prepared statements or parameterized queries
    • Stored procedures
    • Multiple Statements
    • Transactions
    • The "new" password authentication method (on by default in MySQL 5.6; required in 5.7)
    • Any of the new functionality in MySQL 5.1 or later

Since it is deprecated, using it makes your code less future proof.

Lack of support for prepared statements is particularly important as they provide a clearer, less error-prone method of escaping and quoting external data than manually escaping it with a separate function call.

Ref : https://bit.ly/2BIIsF0