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yahya alhalki
1,149 Pointswhy do we have to put parentheses round ($player1 < 11 && $player2 < 11) )?
//My Code
<?php
$player1 = 1;
$player2 = 2;
$round = 0;
$difference = abs($player1 - $player2) < 2;
while($difference|| ($player1 < 11 && $player2 < 11) ){
$round++;
echo "<h2>round $round<h2/>\n";
if(rand(0,1)){
$player1++;
} else{
$player2++;
}
echo "player 1 = $player1<br />\n";
echo "player 2 = $player2<br />\n";
}
?>
//why do we have to put parentheses round ($player1 < 11 && $player2 < 11) )
2 Answers

Piotr Manczak
Front End Web Development Techdegree Graduate 24,787 PointsWe want to keep it as a separate condition. We want to evaluate it separately.

yahya alhalki
1,149 Pointswhat is the use of that. i tried to remove the parenthesis and they both execute the same way

Damir Paulić
6,591 PointsWell, because of the operator precedence, parentheses in this case is not needed. "&&" is executed before "||". https://www.php.net/manual/en/language.operators.precedence.php
Personally, I would still use parentheses because it could get overwhelming to think about precedence while still figuring the logical part.
Michael Cook
Full Stack JavaScript Techdegree Graduate 28,960 PointsMichael Cook
Full Stack JavaScript Techdegree Graduate 28,960 PointsYou need to explain your question to get an answer. The title of your question is vague.