If is it true, the code in the while loop is executed again.
After executing that code, PHP returns to the while loop condition and checks to see if the condition is true. If the condition is met, PHP executes the code in the parentheses after the while loop. The image above shows how PHP loops or iterates through a while loop. Once the increment operator makes $i equal to five, we exit the loop and continue reading onto the next statement, echo ” End of while loop “. The results are the same as the previous loops. Then, we run through the do part where we find our increment operator $i++. The conditional here tells the server to go back and run through the do part again. In the do while loop, the statements in the do while are always run once because the conditional is at the end. The conditional statement $i ” //line breakĪgain, pretty similar to the example above, but there is actually one major difference.
#Php echo once manual#
The first statement $i = 0 is simply setting our variable $i equal to zero. PHP Manual Language Reference Control Structures Change language: Submit a Pull Request Report a Bug requireonce (PHP 4, PHP 5, PHP 7, PHP 8) The requireonce expression is identical to require except PHP will check if the file has already been included, and if so, not include (require) it again.
Example $i = 0 Īfter seeing the while loop, you can probably see how it is like the for loop, but just with the first statement is outside of the loop, the conditional remains in the if like statement, and the second statement is embedded in an if like statement. However, while loops have their own powerful uses that you will discover later in your programming life. Personally, I use for loops much more often than I use while loops. PHP while loops are similar to for loops, but with a different structure.
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