PHP undefined offset array error

Question

I made this array for an assignment, but I can't quite get it right. What I need for it to do is recognize a string from my array and print off if "I'm learning it". I think I'm close, but I keep getting undefined offset.

 $myArray = array ("C ", "Java", "C++ ", "Objective-C", "C#", "PHP","(Visual)
                   Basic", "Python", "JavaScript", "Perl", "Ruby",
                   "PL/SQL", "Delphi/Oject pascal","Visual Basic.Net",
                   "lisp", "Pascal", "Ada", "Transact-SQL", "Logo", "NXT-G");

for ($i = 0; $i<sizeof($myArray); $i++)
    echo $myArray[$i];

if($myArray[$i] == "C") {
    echo "I'm learning this too!";
}
else {
    echo "Your not learning anything";
}

Except if using a for loop is mandatory, you can do the same using the in_array function without an explicit loop. — Casimir et Hippolyte
– Casimir et Hippolyte, Commented Mar 4, 2017 at 10:04

B. Desai · Accepted Answer · 2017-03-04 09:14:18Z

2

You are missing brackets for for loop

    $myArray = array ("C ", "Java", "C++ ", "Objective-C", "C#", "PHP","(Visual)
                   Basic", "Python", "JavaScript", "Perl", "Ruby",
                  "PL/SQL", "Delphi/Oject pascal","Visual Basic.Net",
                 "lisp", "Pasca", "Ada", "Transact-SQL", "Logo", "NXT-G");

for ($i = 0; $i< sizeof($myArray); $i++)
{
  echo $myArray[$i]."<br>";
  if($myArray[$i] == "C") {
    echo "I'm learning this too!";
  }
  else {
    echo "Your not learning anything";
  }
}

answered Mar 4, 2017 at 9:14

B. Desai

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Comments

Jason · Accepted Answer · 2017-03-04 09:15:36Z

1

You're missing enclosing braces on the for loop.

A for loop executes the single instruction after the for command a number of times. If you want to do multiple things, you need to combine them into a block with braces { }

for ($i = 0; $i<sizeof($myArray); $i++)
{
     echo $myArray[$i];
     if($myArray[$i] == "C") 
     {
         echo "I'm learning this too!";
     }
     else
     {
         echo "Your not learning anything";
     }
}

Try and closely adhere to a layout format for your blocks, otherwise it's harder to notice when your braces don't link up properly.

answered Mar 4, 2017 at 9:15

Jason

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