How to $_GET php variable in url [closed] - php

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I have this PHP code and trying to get the value of the variable language from the url parameters when specified link is clicked.
How do I do this? The code below only gets the value of Java in the first statement and not the values in the elseif statements.
if (isset($_GET['language'])) {
if ($_GET['language'] = 'Java') {
$q = 'title:(Java+Developer)';
}
elseif ($_GET['language'] = 'PHP') {
$q = 'title:(PHP+Developer)';
}
elseif ($_GET['language'] = 'JavaScript') {
$q = 'title:(JavaScript+Developer)';
}
}
Links:
<li>Java</li>
<li>PHP</li>
<li>JavaScript</li>

Answer 1

There's a difference between = and ==. One is for assigning, the other for comparing.
In your first if() statement, you're assigning the value Java to $_GET['language'], which will evaluate to Java. This will then be true.
Change the single = in the comparisons to ==, and you should be all set.

Answer 2

You are using a single equals sign. This is an assignment (as you do when defining a variable).
You need to use double equals signs ==. This is how you test equality.
$_GET['language'] == SOME_STRING
In addition, I would recommend using a switch statement instead of multiple if statements:
if ( isset( $_GET[ 'language' ] ) ) {
switch( $_GET[ 'language' ] ){
case "Java":
$q = 'title:(Java+Developer)';
break;
case "PHP":
$q = 'title:(PHP+Developer)';
break;
case "JavaScript":
$q = 'title:(JavaScript+Developer)';
break;
}
}
Using a switch statement will make this code much easier to maintain and also to add extra conditions (other languages).

Answer 3

Check the equal sign! Replace "=" with "=="

Answer 4

try with this code
if (isset($_GET['language'])) {
if ($_GET['language'] == 'Java') {
$q = 'title:(Java+Developer)';
}
elseif ($_GET['language'] == 'PHP') {
$q = 'title:(PHP+Developer)';
}
elseif ($_GET['language'] == 'JavaScript') {
$q = 'title:(JavaScript+Developer)';
}
}

Answer 5

You are assigning value Java to $_GET["language"] which always returns true. You must compare the value of $_GET["language"] against a string. Compare using == or === operator.
if ($_GET["language"] === "Java") {
/* here be dragons */
}
It is also good habit to use Yoda Conditions to catch this kind of errors.
if ("Java" === $_GET["language"]) {
/* here be dragons */
}

Answer 6

You are using "=" here which is for assigning the variable some value.
Have a look at the use of these:
"=" is used for assigning a value to some variable.
"==" is used for comparison (regardless of the data type). For example if
$var =1 and we evaluate a condition
if($var == TRUE )
The result will be bool True because TRUE is 1 and FALSE is 0 always.
3.
"===" comparison based on datatype also. The above condition will evaluate to Bool False because the data types are different.

Answer 7

You should use == instead of =.