get all array keys after specific key in php

Question

I have an array like this,

$ptJson = {
    ["phoneSMS1"]=> "mobile",
    ["phoneSMS2"]=> "mobile",
    ["phoneSMS3"]=> "mobile",
    ["phoneSMS4"]=> "mobile",
    ["phoneSMS5"]=> "main"
}

And I have to delete the phoneSMS3, so I used unset to unset the key

unset($ptJson['phoneSMS3']);

It worked great.! Now I want to move rest keys level-up by one, but don't know how. Searched but have no luck.

So, how to find the rest array keys after phoneSMS3?

Do you mean you want to change the key phoneSMS4 to phoneSMS3, phoneSMS5 to phoneSMS5, etc? — Mureinik
– Mureinik, Commented Oct 18, 2016 at 12:16
Taken from fire-bug. So please forgive me for that. @Mohammad — Keyur
– Keyur, Commented Oct 18, 2016 at 12:28

Johannes · Accepted Answer · 2016-10-18 12:19:17Z

2

for($i = 2; $i < count($ptJson); $i++){
  $ptJson[$i] = 'phoneSMS'.($i+1);
}

this is how you can acess it you just should use it a bit more generic

answered Oct 18, 2016 at 12:19

Johannes

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Comments

Mureinik · Accepted Answer · 2016-10-18 12:27:57Z

1

I'd iterate over the keys from the position you want to remove till the end of the array and assign the following key to the current position in each iteration:

$prefix = 'phoneSMS';
$index = 3;

while (array_key_exists($prefix . ($index + 1), $ptJson)) {
    $ptJson[$prefix . $index] = $ptJson[$prefix . ($index + 1)];
    ++$index;
}
unset($ptJson[$prefix . $index]);

answered Oct 18, 2016 at 12:27

Mureinik

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Comments

Pradyut Manna · Accepted Answer · 2016-10-18 12:36:42Z

1

$flg=0;
$i=1;
foreach($ptJson as $key=>$val){
    $i++;
    if($key =="phoneSMS3"){
        unlink($ptJson[$key]);
        $flg=1;
    }
    if($flg==1)
        $ptJson[$key]=$ptJson["phoneSMS".$i];
}

edited Oct 18, 2016 at 12:36

answered Oct 18, 2016 at 12:19

Pradyut Manna

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1 Comment

Keyur Over a year ago

I want to get the rest array keys after phoneSMS3. You sure this will give me that?

Chandrashekhar Kadam · Accepted Answer · 2016-10-18 12:18:53Z

-1

I think reset($array) function may help.

answered Oct 18, 2016 at 12:18

Chandrashekhar Kadam

14

2 Comments

Keyur Over a year ago

Can you please give an example?

Chandrashekhar Kadam Over a year ago

phpflow.com/php/…

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