Creating an associative array in PHP - php

Question

I am a beginner to Programming; I am stuck while creating an associative array from an existing associative array
<?php
$arr = array(
array(
"question"=>"I get irritated easily.",
"answer"=>"1"
),
array(
"question"=>"I spend time reflecting on things.",
"answer"=>"1"
),
array(
"question"=>"I am quiet around strangers.",
"answer"=>"1"
),
array(
"question"=>"I make people feel at ease.",
"answer"=>"1"
),
array(
"question"=>"I am exacting in my work.",
"answer"=>"1"
),
array(
"question"=>"I often feel blue.",
"answer"=>"3"
),
array(
"question"=>"I am full of ideas.",
"answer"=>"4"
)
);
$answer_array = array();
foreach( $arr as $questions ) {
$answer_array['text']=$questions['answer'];
}
print_r( $answer_array );
?>
I want the $answer_array in the following format:
$answer_array("text"=>"1 , 1 , 1 , 1 , 1 ,3 , 4")
But I am not getting the correct answer as it displays in the following manner:
Array
(
[text] => 4
)
This is because it overwrites all the other values while iterating and only stores the last value. I need to store all the value as I have mentioned above. Kindly suggest where am I going wrong.

Answer 1

You can try to concat the values by changing
$answer_array['text']=$questions['answer'];
to
if(isset($answer_array['text'])){
$answer_array['text'] .= ', '. $questions['answer'] ;
} else {
$answer_array['text'] = $questions['answer'];
}

Answer 2

You could try using array_map to get the answers to every question.
Then you could use implode to join the strings by a delimiter, in this case a ",":
$answer_array = array(
// Implode joins the strings
'text'=>implode(
// Replace this comma by another delimiter if you like
',',
// Array_map applies a function to every element in a array
array_map(
// Define a function that gets the answer to each question
fn($arr)=>$arr["answer"],
$arr
)
)
);
print_r( $answer_array );
Attempt This Online

Answer 3

You can use array_column function
// Enter your code here, enjoy!
$arr = array(
array(
"question"=>"I get irritated easily.",
"answer"=>"1"
),
array(
"question"=>"I spend time reflecting on things.",
"answer"=>"1"
),
array(
"question"=>"I am quiet around strangers.",
"answer"=>"1"
),
array(
"question"=>"I make people feel at ease.",
"answer"=>"1"
),
array(
"question"=>"I am exacting in my work.",
"answer"=>"1"
),
array(
"question"=>"I often feel blue.",
"answer"=>"3"
),
array(
"question"=>"I am full of ideas.",
"answer"=>"4"
)
);
print_r(array_column($arr, 'answer'));
https://onlinephp.io/c/51126