How to dynamically create nested array in php - php

Question

I want create a nested array from a config file dynamically.
My config file structure is like this:
parameter1 value1;
parameter2 value2;
parameter3 value3;
block1{
parameter1-1 value1-1;
parameter1-2 value1-2;
block1-1{
parameter1-1-1 value1-1-1;
parameter1-1-2 value1-1-2;
block1-1-1{
parameter1-1-1-1 value1-1-1-1;
parameter1-1-1-2 value1-1-1-2;
}
block1-1-2{
parameter1-1-2-1 value1-1-2-1;
parameter1-1-2-2 value1-1-2-2;
}
}
block1-2{
parameter1-2-1 value1-2-1;
parameter1-2-2 value1-2-2;
block1-2-1{
parameter1-2-1-1 value1-2-1-1;
parameter1-2-1-2 value1-2-1-2;
}
block1-2-2{
parameter1-2-2-1 value1-2-2-1;
parameter1-2-2-2 value1-2-2-2;
}
}
}
block2{
parameter2-1 value2-1;
parameter2-2 value2-2;
block2-1{
parameter2-1-1 value2-1-1;
parameter2-1-2 value2-1-2;
block2-1-1{
parameter2-1-1-1 value2-1-1-1;
parameter2-1-1-2 value2-1-1-2;
}
block2-1-2{
parameter2-1-2-1 value2-1-2-1;
parameter2-1-2-2 value2-1-2-2;
}
}
block2-2{
parameter2-2-1 value2-2-1;
parameter2-2-2 value2-2-2;
block2-2-1{
parameter2-2-1-1 value2-2-1-1;
parameter2-2-1-2 value2-2-1-2;
}
block2-2-2{
parameter2-2-2-1 value2-2-2-1;
parameter2-2-2-2 value2-2-2-2;
}
}
}
and i want this array dynamically in php:
$blocks = array(
$parameter => $value,
$parameter => $value,
$block => array(
$parameter => $value,
$parameter => $value,
$block => array(
$parameter => $value,
$parameter => $value,
$block => array(
$parameter => $value,
$parameter => $value
...
)
)
)
);
How to create dynamically nested array in PHP
Thanks.
UPDATE:
I read file line by line to an array and i want create above structure for edit it and write it again to config file.
I means from "dynamic" is creating array inside "for" or other similar things.

Answer 1

Try this... (change "conf.txt" to "your conf file name")
<?php
$file = fopen("conf.txt","r");
$array = array();
$a = createArray($file, $array);
fclose($file);
print("<pre>".print_r($a,true)."</pre>");
function createArray($file, $array){
while(! feof($file)){
$line = fgets($file);
$line = trim($line);
if ($line == ""){
continue;
}
if (strpos($line,'{') !== false){
$line = trim(str_replace('{','',$line));
$array[$line] = array();
$array[$line] = createArray($file, $array[$line]);
} else if (strpos($line,'}') !== false) {
return $array;
} else {
$line = str_replace(';','',$line);
$key = strtok($line, ' ');
$value = strtok(' ');
$array[$key] = $value;
}
}
return $array;
}
?>

Answer 2

Creating array dynamically:
in all PHP versions:
$foo = array();
in PHP 5.4+ (aka "short syntax"):
$foo = [];
Creating nested array dynamically:
$foo = [];
$foo['bar'] = [];
$foo['bar']['zoo'] = [];
or
$foo = [];
$bar = ['zoo' => []];
$foo['bar'] = $bar;
And finally call
print_r($foo);
to see what you got created. Both cases are equal so you will see:
Array
(
[bar] => Array
(
[zoo] => Array
(
)
)
}
Please see docs on array: http://php.net/manua/en/language.types.array.php