如何在php中结束if语句

The question is pretty much self-explanatory, I am having trouble how to end if statement in php.

For example,

<?php
if (argument) {
// end if statement
}
else if (different argument) {
// end if statement
}
else if (another different argument) {
// end if statement
}
else {
// do something
}
?>

Consider carefully how an if condition works:

If (boolean condition) Then
    (consequent)
Else
    (alternative)
End If

When an interpreter finds an If, it expects a boolean condition ... and evaluates that condition. If the condition is true, the statements following the then are executed. Otherwise, the execution continues ... After either branch has been executed, control returns to the point after the end If.

The if statement will end if none of its conditions evaluate to true or if one of its conditions evaluate to true. The statement(s) associated with the first true condition will evaluate, and the if statement will end.

See Wikipedia's If–then(–else) for more.

Change :

<?php
    if (argument) {
        // end if statement
    }
    else if (different argument) {
        // end if statement
    }
    else if (another different argument) {
        // end if statement
    else {
        // do something
    }
?>

To :

<?php
    if (argument) {
        // end if statement
    }
    else if (different argument) {
        // end if statement
    }
    else if (another different argument) {
        // end if statement
    }
    else {
        // do something
    }
?>

To use if statement, use the following syntax :

if (condition) {
    // Put your codes here
}

Another example, if you use else if :

else if (condition) {
    // Put your codes here
}

Use the curly bracket { } to contain your codes
PS: you just missed a } at the third if in your codes :)

There should not be a closing brace on line 4, but there should be one at the end of all conditional statements. The syntax is:

if (condition) 
  {
code to be executed if this condition is true;
} elseif (condition) 
  {
   code to be executed if this condition is true;
} else  
  {
code to be executed if all conditions are false;
 }

Further reference at: http://www.w3schools.com/php/php_if_else.asp