Usage and examples of endfor keyword in PHP

Usage and examples of the endfor keyword in PHP

In PHP programming, the for loop is a commonly used control structure, which is used to repeatedly execute a block of code. It can specify the initial value, loop condition and increment Control the number of cycles quantitatively. In PHP, the endfor keyword is a special syntax used to end a for loop.

In a general for loop, we often use braces ({}) to wrap the loop body, and then terminate the loop early by using the break keyword. However, PHP provides a more concise way to end the loop using the endfor keyword.

The endfor keyword is used as follows:

for ($i = 0; $i < 10; $i++):
    // 循环体代码
    echo $i;
endfor;

In the above code, we use colon (:) to replace the traditional braces, and use the endfor keyword to end the loop. This way of writing makes the code more concise and easier to read.

Next, let’s look at some examples of using the endfor keyword.

Example 1: Use endfor to output numbers from 1 to 10

for ($i = 1; $i <= 10; $i++):
    echo $i . ' ';
endfor;

The above code will output: 1 2 3 4 5 6 7 8 9 10. We end the loop from 1 to 10 by using the endfor keyword, and use the echo statement to output the current number in each loop.

Example 2: Use endfor to calculate the sum from 1 to 100

$total = 0;
for ($i = 1; $i <= 100; $i++):
    $total += $i;
endfor;

echo $total;

The above code will output: 5050. We use a variable $total to hold the calculated sum, then add the current number to $total in each loop, and finally output the value of $total.

Through the above two examples, we can see the usage and effect of the endfor keyword. It can make the code more concise and readable, and improve the maintainability of the code.

To summarize, the endfor keyword in PHP can be used as a more concise way to end the for loop. Using endfor can make the code clearer, easier to understand and maintain. I hope this article will help you understand the usage of endfor keyword in PHP.

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