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PHP Exercises: Convert word to digit

PHP: Exercise-33 with Solution

Write a PHP program to convert word to digit.

Input: zero;three;five;six;eight;one
Output: 035681

Sample Solution: -

PHP Code:

<?php
function word_digit($word) {
    $warr = explode(';',$word);
    $result = '';
    foreach($warr as $value){
        switch(trim($value)){
            case 'zero':
                $result .= '0';
                break;
            case 'one':
                $result .= '1';
                break;
            case 'two':
                $result .= '2';
                break;
            case 'three':
                $result .= '3';
                break;
            case 'four':
                $result .= '4';
                break;
            case 'five':
                $result .= '5';
                break;
            case 'six':
                $result .= '6';
                break;
            case 'seven':
                $result .= '7';
                break;
            case 'eight':
                $result .= '8';
                break;
            case 'nine':
                $result .= '9';
                break;    
        }
    }
    return $result;
}

echo word_digit("zero;three;five;six;eight;one")."\n";
echo word_digit("seven;zero;one")."\n";
?>

Sample Output:

035681                                                                 
701

Flowchart:

Flowchart: Convert word to digit

PHP Code Editor:

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Previous: Write a PHP program to check if a number is an Armstrong number or not. Return true if the number is Armstrong otherwise return false.
Next: Write a PHP program to check if the bits of the two given positions of a number are same or not.

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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