How can I truncate a string after 20 words in PHP?
function limit_text($text, $limit) {
if (str_word_count($text, 0) > $limit) {
$words = str_word_count($text, 2);
$pos = array_keys($words);
$text = substr($text, 0, $pos[$limit]) . '...';
}
return $text;
}
echo limit_text('Hello here is a long sentence that will be truncated by the', 5);
Outputs:
Hello here is a long ...
Change the number 3 to the number 20 below to get the first 20 words, or pass it as parameter. The following demonstrates how to get the first 3 words: (so change the 3 to 20 to change the default value):
function first3words($s, $limit=3) {
return preg_replace('/((\w+\W*){'.($limit-1).'}(\w+))(.*)/', '${1}', $s);
}
var_dump(first3words("hello yes, world wah ha ha")); # => "hello yes, world"
var_dump(first3words("hello yes,world wah ha ha")); # => "hello yes,world"
var_dump(first3words("hello yes world wah ha ha")); # => "hello yes world"
var_dump(first3words("hello yes world")); # => "hello yes world"
var_dump(first3words("hello yes world.")); # => "hello yes world"
var_dump(first3words("hello yes")); # => "hello yes"
var_dump(first3words("hello")); # => "hello"
var_dump(first3words("a")); # => "a"
var_dump(first3words("")); # => ""
To Nearest Space
Truncates to nearest preceding space of target character. Demo
$str The string to be truncated
$chars The amount of characters to be stripped, can be overridden by $to_space
$to_space boolean for whether or not to truncate from space near $chars limit
Function
function truncateString($str, $chars, $to_space, $replacement="...") {
if($chars > strlen($str)) return $str;
$str = substr($str, 0, $chars);
$space_pos = strrpos($str, " ");
if($to_space && $space_pos >= 0)
$str = substr($str, 0, strrpos($str, " "));
return($str . $replacement);
}
Sample
<?php
$str = "this is a string that is just some text for you to test with";
print(truncateString($str, 20, false) . "\n");
print(truncateString($str, 22, false) . "\n");
print(truncateString($str, 24, true) . "\n");
print(truncateString($str, 26, true, " :)") . "\n");
print(truncateString($str, 28, true, "--") . "\n");
?>
Output
this is a string tha...
this is a string that ...
this is a string that...
this is a string that is :)
this is a string that is--
use explode() .
Example from the docs.
// Example 1
$pizza = "piece1 piece2 piece3 piece4 piece5 piece6";
$pieces = explode(" ", $pizza);
echo $pieces[0]; // piece1
echo $pieces[1]; // piece2
note that explode has a limit function. So you could do something like
$message = implode(" ", explode(" ", $long_message, 20));
Try regex.
You need something that would match 20 words (or 20 word boundaries).
So (my regex is terrible so correct me if this isn't accurate):
/(\w+\b){20}/
And here are some examples of regex in php.
Simple and fully equiped truncate() method:
function truncate($string, $width, $etc = ' ..')
{
$wrapped = explode('$trun$', wordwrap($string, $width, '$trun$', false), 2);
return $wrapped[0] . (isset($wrapped[1]) ? $etc : '');
}
Its not my own creation, its a modification of previous posts. credits goes to karim79.
function limit_text($text, $limit) {
$strings = $text;
if (strlen($text) > $limit) {
$words = str_word_count($text, 2);
$pos = array_keys($words);
if(sizeof($pos) >$limit)
{
$text = substr($text, 0, $pos[$limit]) . '...';
}
return $text;
}
return $text;
}
If you code on Laravel just use Illuminate\Support\Str
here is example
Str::words($category->publication->title, env('WORDS_COUNT_HOME'), '...')
Hope this was helpful.
Split the string (into an array) by <space>, and then take the first 20 elements of that array.
With triple dots:
function limitWords($text, $limit) {
$word_arr = explode(" ", $text);
if (count($word_arr) > $limit) {
$words = implode(" ", array_slice($word_arr , 0, $limit) ) . ' ...';
return $words;
}
return $text;
}
Try below code,
$text = implode(' ', array_slice(explode(' ', $text), 0, 32))
echo $text;
Something like this could probably do the trick:
<?php
$words = implode(' ', array_slice(split($input, ' ', 21), 0, 20));
use PHP tokenizer function strtok() in a loop.
$token = strtok($string, " "); // we assume that words are separated by sapce or tab
$i = 0;
$first20Words = '';
while ($token !== false && $i < 20) {
$first20Words .= $token;
$token = strtok(" ");
$i++;
}
echo $first20Words;
based on 動靜能量's answer:
function truncate_words($string,$words=20) {
return preg_replace('/((\w+\W*){'.($words-1).'}(\w+))(.*)/', '${1}', $string);
}
or
function truncate_words_with_ellipsis($string,$words=20,$ellipsis=' ...') {
$new = preg_replace('/((\w+\W*){'.($words-1).'}(\w+))(.*)/', '${1}', $string);
if($new != $string){
return $new.$ellipsis;
}else{
return $string;
}
}
This worked me for UNICODE (UTF8) sentences too:
function myUTF8truncate($string, $width){
if (mb_str_word_count($string) > $width) {
$string= preg_replace('/((\w+\W*|| [\p{L}]+\W*){'.($width-1).'}(\w+))(.*)/', '${1}', $string);
}
return $string;
}
Here is what I have implemented.
function summaryMode($text, $limit, $link) {
if (str_word_count($text, 0) > $limit) {
$numwords = str_word_count($text, 2);
$pos = array_keys($numwords);
$text = substr($text, 0, $pos[$limit]).'... Read More';
}
return $text;
}
As you can see it is based off karim79's answer, all that needed changing was that the if statement also needed to check against words not characters.
I also added a link to main function for convenience. So far it hsa worked flawlessly. Thanks to the original solution provider.
Here's one I use:
$truncate = function( $str, $length ) {
if( strlen( $str ) > $length && false !== strpos( $str, ' ' ) ) {
$str = preg_split( '/ [^ ]*$/', substr( $str, 0, $length ));
return htmlspecialchars($str[0]) . '…';
} else {
return htmlspecialchars($str);
}
};
return $truncate( $myStr, 50 );
Another solution :)
$aContent = explode(' ', $cContent);
$cContent = '';
$nCount = count($aContent);
for($nI = 0; ($nI < 20 && $nI < $nCount); $nI++) {
$cContent .= $aContent[$nI] . ' ';
}
trim($cContent, ' ');
echo '<p>' . $cContent . '</p>';
To limit words, am using the following little code :
$string = "hello world ! I love chocolate.";
$explode = array_slice(explode(' ', $string), 0, 4);
$implode = implode(" ",$explode);
echo $implode;
$implot will give : hello world ! I
function getShortString($string,$wordCount,$etc = true)
{
$expString = explode(' ',$string);
$wordsInString = count($expString);
if($wordsInString >= $wordCount )
{
$shortText = '';
for($i=0; $i < $wordCount-1; $i++)
{
$shortText .= $expString[$i].' ';
}
return $etc ? $shortText.='...' : $shortText;
}
else return $string;
}
Simpler than all previously posted regex techniques, just match the first n sequences of non-word followed by sequences of word characters. Making the non-word characters optional allows matching of word characters from the start of the string. Greedy word character matching ensures that consecutive word characters are never treated as individual words.
By writing \K in the pattern after matching n substrings, then matching the rest of the string (add the s pattern modifier if you need dots to match newlines), the replacement can be an empty string.
Code: (Demo)
function firstNWords(string $string, int $limit = 3) {
return preg_replace("/(?:\W*\w+){{$limit}}\K.*/", '', $string);
}
Lets assume we have the string variables $string, $start, and $limit we can borrow 3 or 4 functions from PHP to achieve this. They are:
script_tags() PHP function to remove the unnecessary HTML and PHP
tags (if there are any). This wont be necessary, if there are no HTML or PHP tags.
explode() to split the $string into an array
array_splice() to specify the number of words and where it'll start
from. It'll be controlled by vallues assigned to our $start and $limit variables.
and finally, implode() to join the array elements into your truncated
string..
function truncateString($string, $start, $limit){
$stripped_string =strip_tags($string); // if there are HTML or PHP tags
$string_array =explode(' ',$stripped_string);
$truncated_array = array_splice($string_array,$start,$limit);
$truncated_string=implode(' ',$truncated_array);
return $truncated_string;
}
It's that simple..
I hope this was helpful.
I made my function:
function summery($text, $limit) {
$words=preg_split('/\s+/', $text);
$count=count(preg_split('/\s+/', $text));
if ($count > $limit) {
$text=NULL;
for($i=0;$i<$limit;$i++)
$text.=$words[$i].' ';
$text.='...';
}
return $text;
}
function limitText($string,$limit){
if(strlen($string) > $limit){
$string = substr($string, 0,$limit) . "...";
}
return $string;
}
this will return 20 words. I hope it will help
$text='some text';
$len=strlen($text);
$limit=500;
// char
if($len>$limit){
$text=substr($text,0,$limit);
$words=explode(" ", $text);
$wcount=count($words);
$ll=strlen($words[$wcount]);
$text=substr($text,0,($limit-$ll+1)).'...';
}
function wordLimit($str, $limit) {
$arr = explode(' ', $str);
if(count($arr) <= $limit){
return $str;
}
$result = '';
for($i = 0; $i < $limit; $i++){
$result .= $arr[$i].' ';
}
return trim($result);
}
echo wordLimit('Hello Word', 1); // Hello
echo wordLimit('Hello Word', 2); // Hello Word
echo wordLimit('Hello Word', 3); // Hello Word
echo wordLimit('Hello Word', 0); // ''
I would go with explode() , array_pop() and implode(), eg.:
$long_message = "I like summer, also I like winter and cats, btw dogs too!";
$trimmed_message = explode(" ", $long_message, 5); // <-- '5' means 4 words to be returned
array_pop($trimmed_message); //removing last element from exploded array
$trimmed_message = implode(" ", $trimmed_message) . '...';
Result:
I like summer, also...
what about
chunk_split($str,20);
Entry in the PHP Manual
function limit_word($start,$limit,$text){
$limit=$limit-1;
$stripped_string =strip_tags($text);
$string_array =explode(' ',$stripped_string);
if(count($string_array)>$limit){
$truncated_array = array_splice($string_array,$start,$limit);
$text=implode(' ',$truncated_array).'...';
return($text);
}
else{return($text);}
}
using the function substr() how do I remove First and Last THREE letter in a string and return the ones remaining in the middle?
eg:
$a = 'abc34828xyz';
$a = 'abc347283828xyz';
$a = 'abc347w83828xyz';
// return first 3
return $first = substr($a, 0, 3);
// return last 3
return $last = substr($a, -3);
// return the string in middle
// $mid = ? now how do we always get the ones in the middle
This should work for you:
(Just start with an offset of 3 and then take the length where you subtract 2*3 (6))
echo $middle = substr($a, 3, strlen($a)-6);
You can get it using preg_replace:
$a = 'abc347w83828xyz';
$mid = preg_replace('/...(.*).../', '$1', $a);
echo $mid, PHP_EOL;
Output:
347w83828
And if you want you can actually get them all at once by using a preg_match call:
$a = 'abc347w83828xyz';
preg_match('/(...)(.*)(...)/', $a, $matches);
echo "First: ", $matches[1], PHP_EOL;
echo "Mid: ", $matches[2], PHP_EOL;
echo "Last: ", $matches[3], PHP_EOL;
Output:
First: abc
Mid: 347w83828
Last: xyz
If anyone wants a generic way to just return middle character of a string:
function getMiddle($text): string
{
$length = round((strlen($text)) / 2);
if (strlen($text) % 2 === 0)
{
//even, returns 2 characters
return $text[(int) $length - 1] . $text[(int) $length];
}
//odd, returns 1 character
return $text[(int) $length - 1];
}
or
function getMiddle($text): string
{
$start = floor((strlen($text) - 1) / 2);
$len = strlen($text) % 2 ? 1 : 2;
return substr($text, $start, $len);
}
echo getMiddle("middle") . PHP_EOL;
echo getMiddle("testing") . PHP_EOL;
echo getMiddle("A") . PHP_EOL;
output:
dd
t
A
I want to make a sub-string, where the $count only counts letters, not spaces. This is what I have so far:
$string ="vikas tyagi php";
$string = substr($string, 0, 10);
echo $string;
Output:
vikas tyag
Desired output (I don't want to count the spaces):
vikas tyagi
How would I do this?
i want extract string with those condition
1)Base on count letter
2)Without white space
3)String limit also
Simply count the spaces and add them to the desired length of the capture:
function spaceless_substr($string, $start, $count) {
return substr($string, $start, ($count+substr_count($string, ' ', $start, $count)));
}
$string ="vikas tyagi asd sd as asd";
echo substr($string, 0, 14);
// return: "vikas tyagi a"
echo spaceless_substr($string, 0, 14);
// return: "vikas tyagi asd"
If I understand you correctly you can do it like so:
<?php
$string = "vikas tyagi";
$lettercount = strlen(str_replace(' ', '', $string));
echo $string . ' contains ' . $lettercount . ' letters';
?>
Here I've used strlen() on a version of $string with spaces removed using str_replace()
Addition
I didn't understand the question
Addition
Here's my first crack at this, feel free to amend where you see fit:
$string = "vikas tyagi";
function my_substr($string, $start, $length)
{
$substr = substr($string, $start, $length);
$spaces = count(explode(' ', $substr)) - 1;
if ($spaces > 0)
{
return substr($string, $start, $length + $spaces);
}
return $substr;
}
echo my_substr($string, 0, 10);
$arr = explode(" ",$str);
$length = 10;
for ($i = 0, $currIndex = 0, $finalstring = ""; $currIndex < $length; $i++){
$finalstring .= " ".substr($arr[$i], 0, $length - $currIndex);
$currIndex += strlen($arr[$i]);
}
Here is a demonstration: http://codepad.org/lv4KEsAi
I have a string that looks like this:
$str = "bla_string_bla_bla_bla";
How can I remove the first bla_; but only if it's found at the beginning of the string?
With str_replace(), it removes all bla_'s.
Plain form, without regex:
$prefix = 'bla_';
$str = 'bla_string_bla_bla_bla';
if (substr($str, 0, strlen($prefix)) == $prefix) {
$str = substr($str, strlen($prefix));
}
Takes: 0.0369 ms (0.000,036,954 seconds)
And with:
$prefix = 'bla_';
$str = 'bla_string_bla_bla_bla';
$str = preg_replace('/^' . preg_quote($prefix, '/') . '/', '', $str);
Takes: 0.1749 ms (0.000,174,999 seconds) the 1st run (compiling), and 0.0510 ms (0.000,051,021 seconds) after.
Profiled on my server, obviously.
You can use regular expressions with the caret symbol (^) which anchors the match to the beginning of the string:
$str = preg_replace('/^bla_/', '', $str);
function remove_prefix($text, $prefix) {
if(0 === strpos($text, $prefix))
$text = substr($text, strlen($prefix)).'';
return $text;
}
Here's an even faster approach:
// strpos is faster than an unnecessary substr() and is built just for that
if (strpos($str, $prefix) === 0) $str = substr($str, strlen($prefix));
Here.
$array = explode("_", $string);
if($array[0] == "bla") array_shift($array);
$string = implode("_", $array);
In PHP 8+ we can simplify using the str_starts_with() function:
$str = "bla_string_bla_bla_bla";
$prefix = "bla_";
if (str_starts_with($str, $prefix)) {
$str = substr($str, strlen($prefix));
}
https://www.php.net/manual/en/function.str-starts-with.php
EDIT: Fixed a typo (closing bracket) in the example code.
Nice speed, but this is hard-coded to depend on the needle ending with _. Is there a general version? – toddmo Jun 29 at 23:26
A general version:
$parts = explode($start, $full, 2);
if ($parts[0] === '') {
$end = $parts[1];
} else {
$fail = true;
}
Some benchmarks:
<?php
$iters = 100000;
$start = "/aaaaaaa/bbbbbbbbbb";
$full = "/aaaaaaa/bbbbbbbbbb/cccccccccc/dddddddddd/eeeeeeeeee";
$end = '';
$fail = false;
$t0 = microtime(true);
for ($i = 0; $i < $iters; $i++) {
if (strpos($full, $start) === 0) {
$end = substr($full, strlen($start));
} else {
$fail = true;
}
}
$t = microtime(true) - $t0;
printf("%16s : %f s\n", "strpos+strlen", $t);
$t0 = microtime(true);
for ($i = 0; $i < $iters; $i++) {
$parts = explode($start, $full, 2);
if ($parts[0] === '') {
$end = $parts[1];
} else {
$fail = true;
}
}
$t = microtime(true) - $t0;
printf("%16s : %f s\n", "explode", $t);
On my quite old home PC:
$ php bench.php
Outputs:
strpos+strlen : 0.158388 s
explode : 0.126772 s
Lots of different answers here. All seemingly based on string analysis. Here is my take on this using PHP explode to break up the string into an array of exactly two values and cleanly returning only the second value:
$str = "bla_string_bla_bla_bla";
$str_parts = explode('bla_', $str, 2);
$str_parts = array_filter($str_parts);
$final = array_shift($str_parts);
echo $final;
Output will be:
string_bla_bla_bla
Symfony users can install the string component and use trimPrefix()
u('file-image-0001.png')->trimPrefix('file-'); // 'image-0001.png'
I think substr_replace does what you want, where you can limit your replace to part of your string:
http://nl3.php.net/manual/en/function.substr-replace.php (This will enable you to only look at the beginning of the string.)
You could use the count parameter of str_replace ( http://nl3.php.net/manual/en/function.str-replace.php ), this will allow you to limit the number of replacements, starting from the left, but it will not enforce it to be at the beginning.