Comparison Operators : Comparison Operators « Operator « PHP

Comparison Operators

example         name                               result
$a == $b        Equal                              True if $a is equal to $b.
$a === $b       Identical                          True if $a is equal to $b, and they are of the same type. (PHP4 only)
$a != $b        Not equal                          True if $a is not equal to $b.
$a < $b         Less than                          True if $a is strictly less than $b.
$a > $b         Greater than                       True if $a is strictly greater than $b.
$a <= $b        Less than or equal to              True if $a is less than or equal to $b.
$a >= $b        Greater than or equal to           True if $a is greater than or equal to $b.

  $a = ("PHP"=="PHP")? "true":"false";
  $b = ("PHP"=="PERL")?"true":"false";

  $c = (1.785==1.785)? "true":"false";
  $d = (5 != 5)?"true":"false";

  $e = (true == true)?"true":"false";
  $f = (false != false)?"true":"false";

  $g = (100<200)?"true":"false";
  $h = (100<100)?"true":"false";

  $i = (100<=100)?"true":"false";
  $j = ( -1 > 1 )?"true":"false";

  $result =  "TEST STRINGS \$a:$a  \$b:$b<br>";
  $result .= "TEST NUMBERS \$c:$c \$d:$d<br>";
  $result .= "TEST BOOLEANS \$e:$e \$f:$f<br>";
  $result .= "TEST LESS THAN \$g:$g \$h:$h<br>";
  $result .= "TEST LESS THAN OR EQUAL \$i:$i<br>";  
  $result .= "TEST GREATER THAN \$j:$j";


  <title>Comparison Operators</title>

  <?php echo( $result ); ?>


Related examples in the same category

1.Comparing numbers and strings
2.Loose Comparison Operators
3.Using Comparison Operators in if Statements
4.The Ternary Operator
5.The equality operator
6.These values are compared using dictionary order
7.These values are compared using numeric order
8.Equality Operators summary table
9.Equality Operators in action