Value of 0

[paradigmapc]

I'm sure there is a perfectly logical explanation behind this but why does

print (0 == "STRING") ? "0 is equal to STRING" : "0 is not equal to STRING";

print

0 is equal to STRING

 

no need to say to the identity operator "===". I'm just curious to the reason of why "STRING" would be converted to zero during the comparison.

 

Thanks

[cooldude832]

welll you aren't converting aynthing you are using a print which is a function itself and doesn't take an else if operator

[cooldude832]

<?php
if(0 == "STRING"){
echo "0 = STRING";
}
else{
echo "0 != STRING";
}
?>

 

[paradigmapc]

This code still prints "0 = STRING":

<?php
if(0 == "STRING"){
echo "0 = STRING";
}
else{
echo "0 != STRING";
}
?>

as does:

print (0 == "STRING") ? "0 is equal to STRING" : "0 is not equal to STRING";

 

I think you may have misunderstood by question:

Within the if statement 0 and "STRING" are being compared but because the identity operator (===) was not used string is being converted to a int in order to be compared. Why does a string convert to 0 when being compared to an int?

 

My guess is that what ever is converting the string to an int is returning zero because it cant be converted, but I am not sure, and then again my whole thought process of the event could be wrong.

 

Sorry for the confusion.

[trq]

This looks like a bug to me. "STRING" should actually equate to 1 (true).

 

<?php

  echo ('STRING') ? 'true' : 'false'; // returns as expected true.
  echo ('STRING' == TRUE) ? 'true' : 'false'; // returns as expected true.
  echo ('STRING' == FALSE) ? 'true' : 'false'; // returns as expected false.
  echo ('STRING' == 0) ? 'true' : 'false'; // returns as NOT expected true.

?>

 

[lur]

This looks like a bug to me. "STRING" should actually equate to 1 (true).

 

Nope.

 

(int) 'STRING' = 0;

(bool) 'STRING' = TRUE;

[trq]

This looks like a bug to me. "STRING" should actually equate to 1 (true).

 

Nope.

 

(int) 'STRING' = 0;

(bool) 'STRING' = TRUE;

 

Yeah, I realise now that a string is converted to an int (with a value of 0) when compared with an int.