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PHP Lesson 05 - arrays

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Parham:

--- Quote from: Aliencowfarm on August 30, 2003, 06:08:02 AM ---Parham i like these lessons :) i finally get what array is..  ( i had c++ at school.. the book wasn't that good niter was the teacher)

--- End quote ---

aww thank you :D:D

Spaceman-Spiff:
what is the proper syntax for returning an array from a function to another blank array var?

Parham:
you can simply just take the return value:


--- Code: ---$array = something();
foreach ($array as $element) {
  echo $element . "\n";
}

function something() {
return array('1','2','3');
}

--- End code ---

would print


--- Quote ---1
2
3
--- End quote ---

you can also use the list() function on the return statement:


--- Code: ---list($var1,$var2,$var3) = something();
echo "$var1\n$var2\n$var3";

function something() {
return array('1','2','3');
}

--- End code ---

but you'd need to know how many elements are being returned :).  The above example is just like returning an array and then assigning the first three values to variables.

Martje:
euhmm I used your example to see what it looks like

<?php

$array = something();
foreach ($array as $element) {
  echo $element . "
";
}

function something() {
return array('1','2','3');
}

?>

but I did not get
1
2
3

I got

1 2 3

on my easyphp

the same for the other examples


is there something wrong with my configuration?

I am reading the examples and try to see the outcome in my head
and then verify it with the easy php server to see if it is the way that i thought.

maime

[edited]

might the right code be this

<?php

$array = something();
foreach ($array as $element) {
  echo $element . "<br>\n";
}

function something() {
return array('1','2','3');
}

?>

he said proudly knowing that taking this lessons are not doing his brains in ;D :P

hehehe I feel having classes again.

but i still have not figured out the function of  "\n" yet to me it does not act like a ENTER it acts like a SPACEBAR

writeto:
Maime:

I am going to attempt to clarify something for you. <br> is perfectly ok to use when generating HTML. However, the provided example was suppose to give you a general idea of the use of arrays. \n represent a carriage return, you will use \n when creating a file or formatting output.  The use of echo in this example is as an i/o process in which you are printing $element to the screen, by including \n you are saying you want to place a carriage return (i believe it is ascii 9) that will move the cursor of the current display to the next line (where it will default to the 0 position. <br> is a horse of another color however. <br> is a symbolic reference in html. HTML stands for HyperText Markup Language. It is used to structure output for text and graphics... when your browser is interpretting <br> it is doing exactly the same thing as \n.

I tried to make this simple, if I confused you ignore it.

Andrew

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