$myvar1 = 'this car is most new and fast';
$myvar2 = explode(' ', $myvar1); // slice on spaces
$myvar3 = implode( ',', $myvar2); //add comman
echo $myvar3;
output = this, car, is, most, new, and, fast
But I need this output = this car, is most, new and, fast
I need in pair output.
Thanks all.
This should do it:
<?php
$str = 'this car is most new and fast';
$str_explode = explode(' ', $str);
$str_result = '';
$comma = false;
foreach($str_explode AS $word) {
$str_result .= $word;
if($comma === false) {
$str_result .= ' ';
$comma = true;
} else {
$str_result .= ', ';
$comma = false;
}
}
echo $str_result;
It uses a boolean that is set to true and false every run so only every other word the comma is shown.
$myvar1 = 'this car is most new and fast';
preg_match_all('/([A-Za-z0-9\.]+(?: [A-Za-z0-9\.]+)?)/',
$myvar1,$myvar2); // splits string on every other space
$myvar3 = implode( ',', $myvar2[0]); //add comman
echo $myvar3;
Instead of explode(), I have used preg_match_all() to split the string and implode() with ','
And here is your output:
this car,is most,new and,fast
Related
I want to do a str_replace() but only at the Nth occurrence.
Inputs:
$originalString = "Hello world, what do you think of today's weather";
$findString = ' ';
$nthOccurrence = 8;
$newWord = ' beautiful ';
Desired Output:
Hello world, what do you think of today's beautiful weather
Here is a tight little regex with \K that allows you to replace the nth occurrence of a string without repeating the needle in the pattern. If your search string is dynamic and might contain characters with special meaning, then preg_quote() is essential to the integrity of the pattern.
If you wanted to statically write the search string and nth occurrence into your pattern, it could be:
(?:.*?\K ){8}
or more efficiently for this particular case: (?:[^ ]*\K ){8}
\K tells the regex pattern to "forget" any previously matched characters in the fullstring match. In other words, "restart the fullstring match" or "Keep from here". In this case, the pattern only keeps the 8th space character.
Code: (Demo)
function replaceNth(string $input, string $find, string $replacement, int $nth = 1): string {
$pattern = '/(?:.*?\K' . preg_quote($find, '/') . '){' . $nth . '}/';
return preg_replace($pattern, $replacement, $input, 1);
}
echo replaceNth($originalString, $findString, $newWord, $nthOccurrence);
// Hello world, what do you think of today's beautiful weather
Another perspective on how to grapple the asked question is: "How to insert a new string after the nth instance of a search string?" Here is a non-regex approach that limits the explosions, prepends the new string to the last element then re-joins the elements. (Demo)
$originalString = "Hello world, what do you think of today's weather";
$findString = ' ';
$nthOccurrence = 8;
$newWord = 'beautiful '; // notice that leading space was removed
function insertAfterNth($input, $find, $newString, $nth = 1) {
$parts = explode($find, $input, $nth + 1);
$parts[$nth] = $newString . $parts[$nth];
return implode($find, $parts);
}
echo insertAfterNth($originalString, $findString, $newWord, $nthOccurrence);
// Hello world, what do you think of today's beautiful weather
I found an answer here - https://gist.github.com/VijayaSankarN/0d180a09130424f3af97b17d276b72bd
$subject = "Hello world, what do you think of today's weather";
$search = ' ';
$occurrence = 8;
$replace = ' nasty ';
/**
* String replace nth occurrence
*
* #param type $search Search string
* #param type $replace Replace string
* #param type $subject Source string
* #param type $occurrence Nth occurrence
* #return type Replaced string
*/
function str_replace_n($search, $replace, $subject, $occurrence)
{
$search = preg_quote($search);
echo preg_replace("/^((?:(?:.*?$search){".--$occurrence."}.*?))$search/", "$1$replace", $subject);
}
str_replace_n($search, $replace, $subject, $occurrence);
$originalString = "Hello world, what do you think of today's weather";
$findString = ' ';
$nthOccurrence = 8;
$newWord = ' beautiful ';
$array = str_split($originalString);
$count = 0;
$num = 0;
foreach ($array as $char) {
if($findString == $char){
$count++;
}
$num++;
if($count == $nthOccurrence){
array_splice( $array, $num, 0, $newWord );
break;
}
}
$newString = '';
foreach ($array as $char) {
$newString .= $char;
}
echo $newString;
I would consider something like:
function replaceNth($string, $substring, $replacement, $nth = 1){
$a = explode($substring, $string); $n = $nth-1;
for($i=0,$l=count($a)-1; $i<$l; $i++){
$a[$i] .= $i === $n ? $replacement : $substring;
}
return join('', $a);
}
$originalString = 'Hello world, what do you think of today\'s weather';
$test = replaceNth($originalString, ' ', ' beautiful ' , 8);
$test2 = replaceNth($originalString, 'today\'s', 'good');
First explode a string by parts, then concatenate the parts together and with search string, but at specific number concatenate with replace string (numbers here start from 0 for convenience):
function str_replace_nth($search, $replace, $subject, $number = 0) {
$parts = explode($search, $subject);
$lastPartKey = array_key_last($parts);
$result = '';
foreach($parts as $key => $part) {
$result .= $part;
if($key != $lastPartKey) {
if($key == $number) {
$result .= $replace;
} else {
$result .= $search;
}
}
}
return $result;
}
Usage:
$originalString = "Hello world, what do you think of today's weather";
$findString = ' ';
$nthOccurrence = 7;
$newWord = ' beautiful ';
$result = str_replace_nth($findString, $newWord, $originalString, $nthOccurrence);
My string is : Hi my, name is abc
I would like to output "Hi Name".
[Basically first word of comma separated sentences].
However sometimes my sentence can also be Hi my, "name is, abc"
[If the sentence itself has a comma then the sentence is enclosed with ""].
My output in this case should also be "Hi Name".
So Far I've done this
$str = "hi my,name is abc";
$result = explode(',',$str); //parsing with , as delimiter
foreach ($result as $results) {
$x = explode(' ',$results); // parsing with " " as delimiter
forach($x as $y){}
}
You can use explode to achieve YOUR RESULT and for IGINORE ' OR " use trim
$str = 'hi my,"name is abc"';
$result = explode(',',$str); //parsing with , as delimiter
$first = explode(' ',$result[0]);
$first = $first[0];
$second = explode(' ',$result[1]);
$second = trim($second[0],"'\"");
$op = $first." ".$second;
echo ucwords($op);
EDIT or if you want it for all , separated values use foreach
$str = 'hi my,"name is abc"';
$result = explode(',',$str); //parsing with , as delimiter
$op = "";
foreach($result as $value)
{
$tmp = explode(' ',$value);
$op .= trim($tmp[0],"'\"")." ";
}
$op = rtrim($op);
echo ucwords($op);
Basically it's hard to resolve this issue using explode, str_pos, etc. In this case you should use state machine approach.
<?php
function getFirstWords($str)
{
$state = '';
$parts = [];
$buf = '';
for ($i = 0; $i < strlen($str); $i++) {
$char = $str[$i];
if ($char == '"') {
$state = $state == '' ? '"' : '';
continue;
}
if ($state == '' && $char == ',') {
$_ = explode(' ', trim($buf));
$parts[] = ucfirst(reset($_));
$buf = '';
continue;
}
$buf .= $char;
}
if ($buf != '') {
$_ = explode(' ', trim($buf));
$parts[] = ucfirst(reset($_));
}
return implode(' ', $parts);
}
foreach (['Hi my, "name is, abc"', 'Hi my, name is abc'] as $str) {
echo getFirstWords($str), PHP_EOL;
}
It will output Hi Name twice
Demo
I use php preg_match to match the first & last word in a variable with a given first & last specific words,
example:
$first_word = 't'; // I want to force 'this'
$last_word = 'ne'; // I want to force 'done'
$str = 'this function can be done';
if(preg_match('/^' . $first_word . '(.*)' . $last_word .'$/' , $str))
{
echo 'true';
}
But the problem is i want to force match the whole word at (starting & ending) not the first or last characters.
Using \b as boudary word limit in search:
$first_word = 't'; // I want to force 'this'
$last_word = 'ne'; // I want to force 'done'
$str = 'this function can be done';
if(preg_match('/^' . $first_word . '\b(.*)\b' . $last_word .'$/' , $str))
{
echo 'true';
}
I would go about this in a slightly different way:
$firstword = 't';
$lastword = 'ne';
$string = 'this function can be done';
$words = explode(' ', $string);
if (preg_match("/^{$firstword}/i", reset($words)) && preg_match("/{$lastword}$/i", end($words)))
{
echo 'true';
}
==========================================
Here's another way to achieve the same thing
$firstword = 'this';
$lastword = 'done';
$string = 'this can be done';
$words = explode(' ', $string);
if (reset($words) === $firstword && end($words) === $lastword)
{
echo 'true';
}
This is always going to echo true, because we know the firstword and lastword are correct, try changing them to something else and it will not echo true.
I wrote a function to get Start of sentence but it is not any regex in it.
You can write for end like this. I don't add function for the end because of its long...
<?php
function StartSearch($start, $sentence)
{
$data = explode(" ", $sentence);
$flag = false;
$ret = array();
foreach ($data as $val)
{
for($i = 0, $j = 0;$i < strlen($val), $j < strlen($start);$i++)
{
if ($i == 0 && $val{$i} != $start{$j})
break;
if ($flag && $val{$i} != $start{$j})
break;
if ($val{$i} == $start{$j})
{
$flag = true;
$j++;
}
}
if ($j == strlen($start))
{
$ret[] = $val;
}
}
return $ret;
}
print_r(StartSearch("th", $str));
?>
I have a string in a DB table which is separated by a comma i.e. this,is,the,first,sting
What I would like to do and don't know how is to have the string outputted like:
this, is, the, first and string
Note the spaces and the last comma is replaced by the word 'and'.
This can be your solution:
$str = 'this,is,the,first,string';
$str = str_replace(',', ', ', $str);
echo preg_replace('/(.*),/', '$1 and', $str);
First use, the function provided in this answer: PHP Replace last occurrence of a String in a String?
function str_lreplace($search, $replace, $subject)
{
$pos = strrpos($subject, $search);
if($pos === false)
{
return $subject;
}
else
{
return substr_replace($subject, $replace, $pos, strlen($search));
}
}
Then, you should perform a common str_replace on text to replace all other commas:
$string = str_lreplace(',', 'and ', $string);
str_replace(',',', ',$string);
$words = explode( ',', $string );
$output_string = '';
for( $x = 0; $x < count($words); x++ ){
if( $x == 0 ){
$output = $words[$x];
}else if( $x == (count($words) - 1) ){
$output .= ', and ' . $words[$x];
}else{
$output .= ', ' . $words[$x];
}
}
i have string like this
$string = 'aaaaaa, bbbbbb, cccccc, ';
and i want to modified it to be like this
$string = 'aaaaaa, bbbbbb, cccccc';
the last ',' and space is removed.
how to do this in php?
what is the function needed the achieve that?
my full code is like this
if(isset($_POST['accomodation'])) $accomodation = 'Accomodation, ';
if(isset($_POST['dance'])) $dance = 'Dance Lessons, ';
if(isset($_POST['vacation'])) $vacation = 'Vacation planning, ';
if(isset($_POST['group'])) $group = 'Group Vacation, ';
if(isset($_POST['inprivate'])) $inprivate = 'Private Vacation, ';
if(isset($_POST['land'])) $land = 'Land purchase/lease';
if(isset($_POST['all'])) $all = 'All';
#$interest = $accomodation.$dance.$vacation.$group.$inprivate.$land;
#echo $string;
*sorry for such dumb question, it's been so long i didn't touch native PHP programming
rtrim() function:
rtrim($string,', ');
but how are you defining the string? It may be that you can build it without the comma and space.
EDIT
$interests = array();
if(isset($_POST['accomodation'])) $interests[] = 'Accomodation';
if(isset($_POST['dance'])) $interests[] = 'Dance Lessons';
if(isset($_POST['vacation'])) $interests[] = 'Vacation planning';
if(isset($_POST['group'])) $interests[] = 'Group Vacation';
if(isset($_POST['inprivate'])) $interests[] = 'Private Vacation';
if(isset($_POST['land'])) $interests[] = 'Land purchase/lease';
if(isset($_POST['all'])) $all = 'All';
$interest = implode(', ',$interests);
echo $interest;
$string = preg_replace('/\s*,\s*$/', '', $string);
or, way cooler:
$string = rtrim($string, " ,");
Note that it does not matter the order of the characters in the pattern string.
#You last update.
This changes some things. You could put all your variables in one array and then implode it. Like so:
$items = array();
$items[] = $accomodation = 'Accomodation';
$items[] = $dance = 'Accomodation';
...
$result = implode(', ', $items)
$string = preg_replace( "/,\s*$/","",$string);
Should do the trick
Is it always a comma then a space at the end?
substr($string, 0, -2)
Often times, you can avoid the trailing comma altogether by changing the way you build the string. For example:
$count = 0;
foreach ($this as $that) {
if ($count != 0) {
$string .= ',';
}
$string .= $that['stuff'];
$count++;
}
Would remove the possibility of any trailing comma at the end, no matter the combination of results.