php regex matching issue

Question

I have this kind of output: 1342&-4&-6 And it could be more times or less: 1342&-4 (I need to replace it with: 1342,1344) 1340&-1&-3&-5&-7 (I need to replace it with: 1340,1341,1343,1345,1347)

I've tried to use preg_match but with no success, Can someone help me with that?

Thanks,

1340&-1&-3&-5&-7 --> 1340 and 1341 and 1343 and 1345 and 1347 — K.D
– K.D, Commented Dec 11, 2016 at 20:12
so if you had sting input of "1342&-4" you would get 2 stings returned "1342" and "1344"? — user557846
– user557846, Commented Dec 11, 2016 at 20:14

user557846 · Accepted Answer · 2016-12-11 20:21:55Z

1

<?php



//so if you had sting input of "1342&-4" you would get 2 stings returned "1342" and "1344"? 

//1340&-1&-3&-5&-7 --> 1340 and 1341 and 1343 and 1345 and 1347

//$str="1342&-4";
$str="1340&-1&-3&-5&-7";
$x=explode('&-',$str);

//print_r($x);

foreach ($x as $k=> $v){
    if($k==0){
        //echo raw
        echo $v."<br>";
    }else{
    //remove last number add new last number 
    echo substr($x[0], 0, -1).$v."<br>"; 
    }
}

output:

1340
1341
1343
1345
1347

i used <br> you can use what ever you need or add to a new variable(array)

answered Dec 11, 2016 at 20:21

user557846

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3 Comments

K.D Over a year ago

Thanks guys, both of your answers are good but Dagon's suggestion was more compatible to my code so I'm going to use it. thanks a lot

user557846 Over a year ago

@K.D dont forget to accept the answer: stackoverflow.com/help/someone-answers

dani herrera Over a year ago

@Dagon, sorry about off-topic but, what obsession do you have with "potatoes"?

LF-DevJourney · Accepted Answer · 2016-12-11 20:26:55Z

1

$array = explode('&-', $string);

$len = count($array);

for($i=1; $i<$len; $i++)

    $array[$i] += $array[0]  / 10 * 10;

var_dump(implode(' ', $array));

edited Dec 11, 2016 at 20:26

user557846

answered Dec 11, 2016 at 20:21

LF-DevJourney

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1 Comment

Robin Mackenzie Over a year ago

It works - but a one-liner explanation to go with your code would be useful.

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