What does => mean?

[dgruetter]

I must admit, I do not know what this is used for. I just started oop with php and know what a -> does, but I see => being used all the time and I cannot find out it's exact meaning.

 

Can someone shed a little light on this?

 

Thanks.

[fugix]

i know that => is commonly used to extract a value for a key in an array...

 

$a = array(
    "one" => 1,
    "two" => 2,
    "three" => 3,
    "seventeen" => 17
);

foreach ($a as $k => $v) {
    echo "\$a[$k] => $v.\n";
}

 

something like that

[fugix]

where $v would be the values stored in the $k key of $a array

[hyster]

also as a condition

 

> means greater than

< means less than

= means the same as

so u can use

 

=< means equal to or less than

=> means equal to or more than

its a way of setting a dividing line

 

example

 

$a = '????';

$b = '10';

 

if ($a => $b)

$answer = ''yes;

else

$answear = 'no';

 

if $a is less than 10 then $b returns 'no'

if %a is 10 or more then $b returns 'yes'

[trq]

@hyster Greater than or equal to is represented by >= not =>

[hyster]

oops.

thanks thorpe.

[fugix]

I think it may also be used in objects along with -> bit I'm not sure

[trq]

I think it may also be used in objects along with -> bit I'm not sure

 

Nope. It is a simple operator designed to assign values to array keys.

[salathe]

The => operator is, perhaps confusingly, called a "double arrow" (the token name that PHP sees is T_DOUBLE_ARROW).  It is used in two places, neither being anything directly related to objects or OOP.

 

[*]When assigning keys to be associated with array values

 

$fruits = array('a' => 'apple', 'b' => 'banana');

 

 

[*]When retrieving the key in a foreach loop

 

foreach ($fruits as $key => $value) {

 

[fugix]

so basically the two the I described yesterday

[salathe]

so basically the two the I described yesterday

 

Absolutely, just without the uncertainty.

[chaseman]

The => operator is, perhaps confusingly, called a "double arrow" (the token name that PHP sees is T_DOUBLE_ARROW).  It is used in two places, neither being anything directly related to objects or OOP.

 

[*]When assigning keys to be associated with array values

 

$fruits = array('a' => 'apple', 'b' => 'banana');

 

 

[*]When retrieving the key in a foreach loop

 

foreach ($fruits as $key => $value) {

 

 

Very defined formulation! How would you define -> ? When using for example $this->post_id

 

I know how to use it but I don't really know how to define or explain it to somebody, and I think that shows that I don't fully understand it.

 

 

[salathe]

Very defined formulation! How would you define -> ?

 

That is the "object operator" or, more colloquially, the "arrow operator".  Its token name when PHP parses your code into pieces is T_OBJECT_OPERATOR.

[fugix]

salathe copy paste from php.net 

[Pikachu2000]

Yeah, well there's a good chance that salathe may have actually written that part of the manual.

[fugix]

cool

[chaseman]

Very defined formulation! How would you define -> ?

 

That is the "object operator" or, more colloquially, the "arrow operator".  Its token name when PHP parses your code into pieces is T_OBJECT_OPERATOR.

And in which situations exactly is it used?

[wildteen88]

Very defined formulation! How would you define -> ?

 

That is the "object operator" or, more colloquially, the "arrow operator".  Its token name when PHP parses your code into pieces is T_OBJECT_OPERATOR.

And in which situations exactly is it used?

When you're using/assigning an objects properties/methods. Its all in the manual.

[salathe]

salathe copy paste from php.net 

 

Not at all, though I do know the manual inside out.

 

Yeah, well there's a good chance that salathe may have actually written that part of the manual.

 

Not that particular part.

 

[fugix]

sorry salathe..was rude of me

[salathe]

sorry salathe..was rude of me

 

Not a problem, I didn't consider it rude at all. But thanks for the apology.

[dgruetter]

Thank you very much for the information. IT was very helpful.

[fugix]

glad we could help!