PHP delete value from array if var is found in the value

Question

I have an array that looks like this:

Array
(
   [0] => aaaaa
   [1] => bbbbb
   [2] => ccxcc
   [3] => ddddd
)

I want do delete every value of the array that contains the letter x, so this would be the outcome:

Array
(
   [0] => aaaaa
   [1] => bbbbb
   [2] => ddddd
)

How would I do this?

Thanks!

NullUserException · Accepted Answer · 2011-09-12 15:00:26Z

9

You can use array_filter()

$output = array_filter($input, function ($v) { return strpos($v, 'x') === FALSE; });

If you are using PHP < 5.3.0:

function filter_x($v) { 
    return strpos($v, 'x') === FALSE; 
}

$output = array_filter($input, 'filter_x');

answered Sep 12, 2011 at 15:00

NullUserException

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3 Comments

Aleks G Over a year ago

Yes! Got to love array_filter

BBR Over a year ago

Thanks, I use PHP < 5.3.0 though

Yoshi Over a year ago

One could use use to make the filter callback function a bit more flexible. Like: function ($val) use ($char) { return strpos($val, $char) === false; }.

DaveRandom · Accepted Answer · 2011-09-12 15:00:13Z

1

foreach ($array as $k => $v) { // Loop the array
  if (strpos($v,'x') !== FALSE) { // Check if $v has a letter x in it
    unset($array[$k]); // Delete the element
  }
}
array_merge($array); // Put the remaining keys in a contiguous order

answered Sep 12, 2011 at 15:00

DaveRandom

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Comments

Jonnix · Accepted Answer · 2011-09-12 15:00:27Z

1

for($i = 0; $i < count($array); $i++) {
    if(strpos($array[$i], 'x') !== false) {
        unset($array[$i]);
    }
}

answered Sep 12, 2011 at 15:00

Jonnix

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2 Comments

BBR Over a year ago

DaveRandom's idea was better as it arranged the array with array_merge but still thanks!

Jonnix Over a year ago

Yeah, totally missed that you wanted the array reindexed :P

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