PHP get words with length longer than 3 from string

Question

Is there a function that can cut words from a string that are small length e.g. "the, and, you, me, or" all these short words that are common in all sentences. i want to use this function to fill a fulltext search with criteria

before the method:

$fulltext = "there is ongoing work on creating a formal PHP specification.";

outcome:

$fulltext_method_solution = "there ongoing work creating formal specification."

What you have tried so far can you please post your efforts – Narendrasingh Sisodia Aug 31 '15 at 06:55 — Narendrasingh Sisodia, Aug 31 '15 at 06:55

viral · Accepted Answer · 2015-08-31T09:57:30.837

4

$fulltext = "there is ongoing work on creating a formal PHP specification.";

$words = array_filter(explode(' ', $fulltext), function($val){
             return strlen($val) > 3; // filter words having length > 3 in array
         });

$fulltext_method_solution = implode(' ', $words); // join words into sentence

edited Aug 31 '15 at 09:57

answered Aug 31 '15 at 07:01

viral

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1

welcome, note that it is using closure function, which require `php >= 5.3`. Also `$words` is array, implode it as you need. @user3485007 – viral Aug 31 '15 at 07:20
i saw it, also tested the code and saw indeed each word was an index. – user3485007 Aug 31 '15 at 07:33

Suchit kumar · Answer 2 · 2015-08-31T07:17:54.300

3

try this:

 $fulltext = "there is ongoing work on creating a formal PHP specification.";
$result=array();
$array=explode(" ",$fulltext);
foreach($array as $key=>$val){
    if(strlen($val) >3)
        $result[]=$val;
}
$res=implode(" ",$result);

edited Aug 31 '15 at 07:17

answered Aug 31 '15 at 06:57

Suchit kumar

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why don't you use `implode()` ? – Raptor Aug 31 '15 at 07:08
For the cost / performance you concern, please read [this](http://stackoverflow.com/questions/124067/php-string-concatenation-performance). – Raptor Aug 31 '15 at 07:22
@Raptor i'll go through this.Thanks. – Suchit kumar Aug 31 '15 at 07:25

Luthando Ntsekwa · Answer 3 · 2015-08-31T07:03:18.450

2

try this:

$stringArray = explode(" ", $fulltext);
foreach ($stringArray as $value)
{
    if(strlen($value) < 3)
         $fulltext= str_replace(" ".$value." " ," ",$fulltext);
}

Here is a working DEMO

edited Aug 31 '15 at 07:03

answered Aug 31 '15 at 06:58

Luthando Ntsekwa

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score 2 · Answer 4 · answered Aug 31 '15 at 07:01

2

You can simply use implode, explode along with array_filter

echo implode(' ',array_filter(explode(' ',$fulltext),function($v){ return strlen($v) > 3;}));

or simply use preg_replace as

echo preg_replace('/\b[a-z]{1,3}\b/i','',$fulltext);

answered Aug 31 '15 at 07:01

Narendrasingh Sisodia

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score 1 · Answer 5 · answered Aug 31 '15 at 06:56

Simply explode the string and check for the strlen()

$fulltext = "there is ongoing work on creating a formal PHP specification.";

$ex = explode(' ',$fulltext);
$res = '';
foreach ($ex as $txt) {
    if (strlen($txt) > 3) {
    $res .= $txt . ' ';
    }
}
echo $res;

score 1 · Answer 6 · answered Aug 31 '15 at 07:00

1

By using preg_replace

echo $string = preg_replace(array('/\b\w{1,3}\b/','/\s+/'),array('',' '),$fulltext);

answered Aug 31 '15 at 07:00

Saty

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score 1 · Answer 7 · answered Aug 31 '15 at 07:01

1

This will also produce the desired results:

<?php
    $fulltext = "there is ongoing work on creating a formal PHP specification.";
    $fulltext = preg_replace('/(\b.{1,3}\s)/',' ',$fulltext);
    echo $fulltext;
?>

answered Aug 31 '15 at 07:01

Rehmat

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PHP get words with length longer than 3 from string

7 Answers7