php process control else

This article mainly introduces else about PHP process control, which has a certain reference value. Now I share it with everyone. Friends in need can refer to it

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(PHP 4, PHP 5 , PHP 7)

It is often necessary to execute a statement when a certain condition is met, and execute other statements when the condition is not met. This is the function of else. else extends the if statement and can execute the statement when the value of the expression in the if statement is FALSE. For example, the following code displays a is bigger than b when is greater than , otherwise it displays a is NOT bigger than b:

<?php
if ($a > $b) {
  echo "可以执行";
} else {
  echo "不可以执行";
}
?>

else The expressions in the if and elseif (if any) statements have the value only FALSE is executed when

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