Different ways to add to an array

[Fletchy]

why would you use array_push() instead of just going $arrayvar[] = 'value'; ?

Just a quick question 🙂.....thanks

This place got an IRC channel?

[thorpe]

well, for one thing array_push returns a count of the array after youve added your new value. can come in handy.

[Fletchy]

Is that return usually only used for testing purposes?

Notice that this only prints the array when i use print_r, whats this return thing with array_push?

<?php
$pizzaToppings = array('onion', 'tomato', 'cheese', 'anchovies', 'ham', 'pepperoni'); 
print_r($pizzaToppings); 
print "<br>";
array_push($pizzaToppings, 'bacon and cheese crust');
print_r($pizzaToppings);
print "<br>";
array_push($pizzaToppings, 'bbq sauce');
print_r($pizzaToppings);
?>

Oh and how come with that print_r function it doesnt print the index number of the last element?

Thanks

[mrhappiness]

Originally posted by Fletchy
Oh and how come with that print_r function it doesnt print the index number of the last element?

<?php
$pizzaToppings = array('onion', 'tomato', 'cheese', 'anchovies', 'ham', 'pepperoni'); 
print_r($pizzaToppings); 
print "<br>";
array_push($pizzaToppings, 'bacon and cheese crust');
print_r($pizzaToppings);
print "<br>";
array_push($pizzaToppings, 'bbq sauce');
print_r($pizzaToppings);
?>

outputs:

Array ( [0] => onion [1] => tomato [2] => cheese [3] => anchovies [4] => ham [5] => pepperoni )
Array ( [0] => onion [1] => tomato [2] => cheese [3] => anchovies [4] => ham [5] => pepperoni [6] => bacon and cheese crust )
Array ( [0] => onion [1] => tomato [2] => cheese [3] => anchovies [4] => ham [5] => pepperoni [6] => bacon and cheese crust [7] => bbq sauce )

[Fletchy]

Oh my, I was reading it wrong.. 🙂

What about my other question?

(Notice that this only prints the array when i use print_r, whats this return thing with array_push?)

[mrhappiness]

$pizzaToppings = array('onion', 'tomato', 'cheese', 'anchovies', 'ham', 'pepperoni');
print_r($pizzaToppings);
print "<br>";
echo array_push($pizzaToppings, 'bacon and cheese crust');
echo 'elements are in $pizzaToppings<br />';
print_r($pizzaToppings);
print "<br>";
echo 'Now there are ';
echo array_push($pizzaToppings, 'bbq sauce');
echo ' elements in $pizzaToppings<br />';
print_r($pizzaToppings);

like this?

[Fletchy]

Whats the diff between echo and print?

Basically the way is see it:

array_push adds an element to the end of the array, thats all (does anything else go on? Really not clear on that)

or is it just the same as $arrayvar[index] = 'blah';

I apoligize for asking stupid questions just the array section of PHP is confusing me