How can I fix my code to make it function? - php

Question

I'm new in PHP (and in programming altogether). I have watched a video explaining the basics, so I decided to play around with PHP by myself; I wrote this code:
<?php
$people = [
array("John", "smart"),
array("Mike", "dumb"),
array("Jose", "smart"),
array("Emmanuel", "dumb")
];
foreach ($people as $name => $intelligence) {
};
echo $name [0][0]." "."is ". $intelligence[0][1];
?>
I'm trying to output:
John is smart
However, it outputs:
is m
I'm not sure how to fix this.
Please help, thank you.

Answer 1

Your array data (per item) looks like this:
[
'john',
'smart'
]
There is no key association to these values. So in your output example, what you actually need to do is:
foreach ($people as $el)
{
echo $el[0]. ' is ' .$el[1];
}
Your data is a numerically indexed array, starting at 0. So 0 = john and 1 = smart.
It would be better to structure your array like this:
$people = [
0 => [
'name' => 'john',
'intelligence' => 'smart'
], # etc.
];
foreach ($people as $el)
{
echo $el['name']. ' is ' .$el['intelligence'];
}
here we're using named keys that make sense.
In your code example you do this:
foreach ($people as $name => $intelligence)
but $name in your loop is actually the item key.. so 0, 1 etc. and intelligence is the array. Not the name and intelligence as you think.
However, if you're literally just trying to echo out the first element, just do:
echo $people[0][0]. ' is ' .$people[0][1];

Answer 2

I think this is what you meant:
<?php
$people = [
array("John", "smart"),
array("Mike", "dumb"),
array("Jose", "smart"),
array("Emmanuel", "dumb")
];
foreach ($people as $person) {
echo $person[0] ." is ". $person[1]."<br/>";
}
Your people array is fine if that's really the way you want to write it.
You could instead declare it like the following. As another exercise, why don't you declaring the array like this and they modify the rest of the code so it prints what you want.
$people = [
"John" => "smart",
"Mike" => "dumb",
"Jose" => "smart",
"Emmanuel" => "dumb"
];
Your echo statement was outside of the for loop. I moved it inside.
The way you were reading your people array didn't seem quite right, so I've changed it to:
$person[0] - Get the zeroth element in the inner array, the name
$person[1] - Get the first element in the array, the intelligence

Answer 3

Change this
<?php
$people = [
array("John", "smart"),
array("Mike", "dumb"),
array("Jose", "smart"),
array("Emmanuel", "dumb")
];
foreach ($people as $name => $intelligence) {
};
echo $name [0][0]." "."is ". $intelligence[0][1];
?>
to this
$people = [
"John" => "smart",
"Mike" => "dumb",
"Jose" => "smart",
];
foreach ($people as $name => $intelligence) {
echo $name." is ". $intelligence;
};

Answer 4

You can create a simple function passing it params eg. Name to find and array of people.
<?php
$people = [
["John", "smart"],
["Mike", "dumb"],
["Jose", "smart"],
["Emmanuel", "dumb"]
];
function return_Sentence( $name , $array ){
foreach ($array as $details) {
if($name == $details[0]){
return $details[0] . ' is ' . $details[1];
}
}
return 'Not Found';
}
echo return_Sentence( "John" , $people );
?>