Output number 1 to 100 by for loop in PHP

Print numbers with a loop

A for loop is a clear way to repeat an operation a known number of times. Initialize the counter, define the stop condition, and update the counter on each iteration.

<?php
for ($i = 1; $i &lt;= 5; $i++) {
    echo $i . PHP_EOL;
}

For and foreach loop in PHP with break statement and creating patterns using nested for loops

We can print numbers from 1 to 10 by using for loop. You can easily extend this program to print any numbers from starting from any value and ending on any value.

for ($i = 1; $i &lt;= 10; $i++) {  
    echo $i;  
    echo "<br>";  
}

The echo command will print the value of $i to the screen. In the next line we have used the same echo command to print one html line break. This way all numbers will be printed in one new line.

More Details on FOR loop
Here we have printed from 1 to 10 numbers, by changing the values inside the for loop you can print numbers starting from any value to ending at any value.

For loop is used when we know exactly how many times the looping is required. Here no condition is set for looping. While loops are used for conditional looping.

What happens when we keep a condition which the loop can never meets?

for ($i = 1; $i &lt;= 10; $i++) {  
    echo $i;  
    $i = 5;  
}

Inside the loop each time we are resetting the value of $i to 5 , so it can never reach value of 10 to exit the loop.
Output is here.

....
Fatal error: Maximum execution time of 30 seconds exceeded in H:\php_files\plus2net\z\for.php on line 18

Server stops the execution of the script after 30 seconds. This value of 30 seconds is set at php.ini file, we can change this upper limit of execution time by using ini_set() function.

Just add this line to the above code.

error_reporting(E_ALL); // Display all types of error  
set_time_limit(2); // Max execution time is set to 2 seconds  

for ($i = 1; $i &lt;= 10; $i++) {  
    echo $i;  
    $i = 5;  
}

Now script execution will stop after 2 seconds
More on PHP Maximum Execution time

Questions

How do you use a for loop in PHP to output numbers from 1 to 100?
What is the syntax for creating a for loop in PHP?
How do you set the initial value, condition, and increment/decrement in a for loop to output numbers from 1 to 100?
Can you customize the starting and ending values in the for loop to output a different range of numbers?
How do you display each number within the for loop using PHP's echo or print statement?
How do you format the output to separate each number on a new line or with a specific delimiter?
Can you perform additional operations or calculations on each number within the for loop before outputting it?
How do you handle special cases or conditions within the for loop while outputting numbers 1 to 100?
Are there alternative loop structures in PHP that can be used to achieve the same output?
What are some best practices for optimizing the performance of the for loop when outputting a large range of numbers?

Let us try with some simple PHP examples.
Introduction to PHP Sample codes in PHP
Check the string or number is Palindrome or not in PHP

Subhendu Mohapatra

Author & Instructor at plus2net

I write and maintain practical tutorials on Python, PHP, SQL, JavaScript, HTML, jQuery, and web development at plus2net. The tutorials focus on clear explanations, working examples, and code that readers can test and adapt while learning.

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	20-12-2022
How to print for loop from 1 to 100 in shortcode in dynamic way i.e. putting the number of anyone desire

smo1234	12-09-2015
Change for( $i=1; $i<=100; $i++ )

Printing number from 1 to 50 by for loop

Print numbers with a loop

Questions

Subhendu Mohapatra