How to unset array key based on its value?

[100faces]

Hi guys,

I have one multidim array and I have to unset the keys which are holding specific string(like "1235002") in its values and to write the new array into a text file.
Is it possible?
array->key->value("text text 1235002 text text")
array->key->value("text text 3123234 text text")

I have this so far:

$file = "text.txt";

$word1="HEAD";
$word2="FOOT";

$delimiter = 1111;

$handle = fopen($file, "r");
$contents = fread($handle, filesize($file));
fclose($handle);

$pattern = '/'.$word1.'(.*?)'.$word2.'/imsx';

preg_match_all($pattern,file_get_contents($file),$matches);
//echo "<pre>".print_r($matches,true).'</pre>';

//get the values of the multidim. array
$count = count ($matches);
for ($i=0; $i<$count; $i++){
$countmore=count($matches[$i]);
for ($j=0; $j < $countmore; $j++){

// print ($matches[$i][$j] . "<br> ");

$text =$matches[$i][$j]; // this should be a string
// echo $text ;

$tmp = explode(" ",$text) ;

$words = array();
foreach ($tmp as $v)
{
if (strlen($v)>0)
{
$words[] = $v;
}

}
$words_string = implode(' ',$words);

How should I proceed from this point?

[Weedpacket]

Please see this FAQ and other sticky threads in this forum for information about formatting your source code.

In the absence of any explanation of "what you have so far" is supposed to be doing, assuming you have an array of strings and you want to remove all array elements that contain a certain substring:

$filtered_array = preg_grep('/pattern matching the substring/', $array, PREG_GREP_INVERT);

[100faces]

weedpacket,
I think it's clear what the code does 🙂
Thanks for the advice anyway 🙂