在FOREACH循环中的PHP IF语句

Question

Returning to PHP after a fair few years off, just for a personal project.

I am having trouble getting an if statement to work inside a foreach loop. I am trying to get the code to echo an additional value if one of the arrays equals a certain word.

The code I have so far is:

$test = array('test1', 'test2', 'test3', 'test4', 'test5');

foreach ($test as $value){  
    if ($value == "test2"){
        $secondValue = "value";
    }   

    echo $value . $secondValue . "<br />";
}

I was expecting this to output the following:

test1
test2value
test3
test4
test5

However it outputs this...

test1
test2value
test3value
test4value
test5value

Any ideas as to where I am going wrong? Many Thanks

Answer 1

You must clear/reset the $value

 $test = array('test1', 'test2', 'test3', 'test4', 'test5');

 foreach ($test as $value){  
   $secondValue ="";
   if ($value == "test2"){
      $secondValue = "value";
   }   

   echo $value . $secondValue . "<br />";
 }

Answer 2

You never reset $secondValue back to an empty string after the loop has completed so it always has a value (literally).

$test = array('test1', 'test2', 'test3', 'test4', 'test5');

foreach ($test as $value){  
    $secondValue = null;
    if ($value == "test2"){
        $secondValue = "value";
    }   

    echo $value . $secondValue . "<br />";
}

Answer 3

Be sure to reset $secondValue upon each iteration.

$test = array('test1', 'test2', 'test3', 'test4', 'test5');

foreach ($test as $value){  
    $secondValue = '';
    if ($value == "test2"){
        $secondValue = "value";
}   

echo $value . $secondValue . "<br />";
}

Answer 4

foreach ($test as $value){  
    if ($value == "test2"){
         echo $value . $secondValue . "<br />";
    } 
   else  
    echo $value . "<br />";
}

Answer 5

Please Use this code , because it's a short answer.

$test = array('test1', 'test2', 'test3', 'test4', 'test5');
foreach ($test as $value){  
    echo $value . ($value == 'test2' ? 'value' : '') . "<br />";  
}