This might looks dumb, but I have no idea how $a += 3; works. I can't figure out, for every answer I would be grateful
<?php
$a = 0;
for ($i=0; $i<5; $i++) {
$a += 3; // How this actually works
}
echo $a; // Echoing 15
?>
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kronberger
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`+=` is an Assignment Operator ([docs](http://php.net/manual/en/language.operators.assignment.php)) in PHP. – esqew Jan 29 '18 at 13:45
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it adds whatever is on the right, to the existing value of the $variable. in your case. $a gets increased by 3 with every loop. – Friedrich Roell Jan 29 '18 at 13:46
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Thank you. Gotcha – kronberger Jan 29 '18 at 14:47