PHP if Operators
Veröffentlicht 2024-05-17 07:45:46
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Comparison Operators
If
statements usually contain conditions that compare two values.
ExampleGet your own PHP Server
Check if $t
is equal to 14:
$t = 14;
if ($t == 14) {
echo "Have a good day!";
}
Try it Yourself »To compare two values, we need to use a comparison operator.
Here are the PHP comparison operators to use in if
statements:
Operator | Name | Result | Try it |
---|---|---|---|
== | Equal | Returns true if the values are equal | Try it » |
=== | Identical | Returns true if the values and data types are identical | Try it » |
!= | Not equal | Returns true if the values are not equal | Try it » |
<> | Not equal | Returns true if the values are not equal | Try it » |
!== | Not identical | Returns true if the values or data types are not identical | Try it » |
> | Greater than | Returns true if the first value is greater than the second value | Try it » |
< | Less than | Returns true if the first value is less than the second value | Try it » |
>= | Greater than or equal to | Returns true if the first value is greater than, or equal to, the second value | Try it » |
<= | Less than or equal to | Returns true if the first value is less than, or equal to, the second value | Try it » |
Logical Operators
To check more than one condition, we can use logical operators, like the &&
operator:
Example
Check if $a
is greater than $b
, AND if $a
is less than $c
:
$a = 200;
$b = 33;
$c = 500;
if ($a > $b && $a < $c ) {
echo "Both conditions are true";
}
Try it Yourself »Here are the PHP logical operators to use in if
statements:
Operator | Name | Description | Try it |
---|---|---|---|
and | And | True if both conditions are true | Try it » |
&& | And | True if both conditions are true | Try it » |
or | Or | True if either condition is true | Try it » |
|| | Or | True if either condition is true | Try it » |
xor | Xor | True if either condition is true, but not both | Try it » |
! | Not | True if condition is not true | Try it » |
We can compare as many conditions as we like in one if
statement:
Example
Check if $a
is either 2, 3, 4, 5, 6, or 7:
$a = 5;
if ($a == 2 || $a == 3 || $a == 4 || $a == 5 || $a == 6 || $a == 7) {
echo "$a is a number between 2 and 7";
}
Try it Yourself »Suche
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