PHP for loop Exercises: Add hyphen (-) between numbers

Last update on May 31 2025 12:57:10 (UTC/GMT +8 hours)

1. Number Sequence Display

Create a script that displays 1-2-3-4-5-6-7-8-9-10 on one line. There will be no hyphen(-) at starting and ending position.

Sample Solution:

PHP Code:

<?php
// Loop through numbers from 1 to 10
for($x=1; $x<=10; $x++)
{
    // Check if number is less than 10
    if($x < 10)
    {
        // Print number with a dash if less than 10
        echo "$x-";
    }
    else
    {
        // Print number followed by a newline if it's 10
        echo "$x"."\n";
    }
}
?>

Output:

1-2-3-4-5-6-7-8-9-10

Explanation:

In the exercise above,

The code starts with a PHP opening tag <?php.

It initializes a "for" loop that runs from 1 to 10 ($x=1; $x<=10; $x++), incrementing the variable '$x' by 1 in each iteration.
Within the loop, there's an "if" condition to check if the current value of '$x' is less than 10 (if($x < 10)).
If '$x' is less than 10, it prints the value of '$x' followed by a dash (echo "$x-").
If '$x' is equal to 10, it prints the value of '$x' followed by a newline (echo "$x"."\n").
Finally, PHP code ends with a closing tag ?>.

Flowchart:

For more Practice: Solve these Related Problems:

Write a PHP script to print numbers 1 to 10 in a single line, using implode() on a generated array without leading or trailing delimiters.
Write a PHP function that builds a numeric string from 1 to 10 with a custom separator and trims any extra separator from the ends.
Write a PHP program that uses array_map() and range() to generate numbers 1 to 10 and then joins them into a hyphen-separated string with no hyphens at either end.
Write a PHP script that constructs a number sequence by concatenating numbers in a loop, ensuring no extra hyphen is added at the beginning or end.

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PHP Code Editor:

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