The else of PHP process Control

This article mainly introduces the PHP process control of the else, has a certain reference value, now share to everyone, a need for friends can refer to

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(PHP 4, PHP 5, PHP 7)

It is often necessary to execute a statement when a condition is met, and to execute other statements when the condition is not satisfied, which is the function of else. else extends the IF statement, which can be executed when the value of an expression in an if statement is FALSE . For example, the following code shows A is bigger than Bwhen it is greater than, whereas the opposite shows a is not bigger than B:

<?PHPIF ($a > $b) {  echo "can execute";} else {  echo "cannot be executed";}? >

Elsestatement is onlyifas wellElseIfThe value of the expression in the statement (if any) isFALSEwhen executing