creating dynamic array in php - php

Question

I have following records in text file, need to extract that record form text file and treat them as seperate array variables
r1=(1,2,3)|r2=(4,5,6)|r3=(1,2,3,4,5,7)|rn=(9,6,7,8) seperated by pipe(|)
I need to represent that as array use seperately like below
$r1= Array
(
[0] => 1
[1] => 2
[2] => 3
)
$r2=Array
(
[0] => 4
[1] => 5
[2] => 6
)
I have no idea how to do it, is it possible in php?

Answer 1

Just a plain regular expression to break up the string, followed by an explode on each group:
if (preg_match_all('#(\w+)=\(([\d,]*)\)#', $s, $matches)) {
foreach ($matches[2] as $i => $groups) {
$group_name = $matches[1][$i];
$$group_name = array_map('intval', explode(',', $groups));
}
}
print_r($r1);
print_r($r3);
print_r($rn);

Answer 2

You can use Eval
//Assuming you can pull the content from text file using fread
$temp = "r1=(1,2,3)|r2=(4,5,6)";
$temp=str_replace("=","=array",$temp);
$split=explode("|",$temp);
echo "<pre>";
foreach($split as $k=>$v){
$v="$".$v.";";
//Evaluate a string as PHP code .i.e You will get r1,r2 as a variable now which is array
eval($v);
}
print_r($r1);
print_r($r2);

Answer 3

$data = "r1=(1,2,3)|r2=(4,5,6)|r3=(1,2,3,4,5,7)|rn=(9,6,7,8)";
$arr = explode("|", $data);
$finArray = array();
foreach($arr as $key=>$value)
{
$single = explode('(', $value);
$finArray[] = explode(',', str_replace(')', '', $single[1]));
}
print_r($finArray);

Answer 4

can be done as:
$string="r1=(1,2,3)|r2=(4,5,6)|r3=(1,2,3,4,5,7)|rn=(9,6,7,8)";
$string=str_repla("r1=","",$string);
$yourArray=explode('|', $string);

Answer 5

This code will help you:--
<?php
$file = "/tmp/file1.txt"; // this is your file path
$f = fopen($file, "r");
while ( $line = fgets($f, 1000) ) {
print $line;
$a=explode('|',$line);
print_r($a); // I have explode based on | for you...
foreach($a as $key=>$value)
{
print_r($value);
}
fclose($file);
}
?>
""or""
$a="r1=(1,2,3)|r2=(4,5,6)|r3=(1,2,3,4,5,7)|rn=(9,6,7,8)";
$a=explode('|',$a);
print_r($a);

Answer 6

<?php
$file = "file.txt";
$f = fopen($file, "r");
while ( $line = fgets($f, 1000) ) {
$str = $line;
}
$str1 = explode("|",$str);
foreach($str1 as $temp) {
$str2 = explode("=",$temp);
$data[$str2[0]] = explode(",",trim($str2[1],"()"));
}
echo '<pre>';
print_r($data);
echo '</pre>';
?>
This will do your job.