Closed. This question needs debugging details. It is not currently accepting answers.
Edit the question to include desired behavior, a specific problem or error, and the shortest code necessary to reproduce the problem. This will help others answer the question.
Closed 8 years ago.
Improve this question
$string = "Hello World";
I want to place "_" randomly in $string so the output would be,
_H_e_ll_o W_orl_d
I've searched and I'm unable to find a working solution.
You can use mt_rand(0, 1) randomize! May be this code might work!
$string = "Hello World";
$string = str_split($string);
$final = "";
foreach ($string as $char)
$final .= ((mt_rand(0, 1) == 0) ? "_" : "") . $char;
echo $final;
After running a few times, I am getting this input:
H_ello W_or_l_d
He_llo W_o_rld
H_e_ll_o _W_o_r_ld
_Hell_o _W_orl_d_
He_l_lo _Wor_ld
_He_ll_o Wor_ld
Elaborating on Praveen Kumar's answer, but with more of a functional twist, we might do:
function underscorize($s, $t)
{
return $s . ((mt_rand(0, 1) == 0) ? "_" : "") . $t;
}
$string = "Hello World";
echo array_reduce(str_split("Hello World"), "underscorize");
Related
Closed. This question needs debugging details. It is not currently accepting answers.
Edit the question to include desired behavior, a specific problem or error, and the shortest code necessary to reproduce the problem. This will help others answer the question.
Closed 8 years ago.
Improve this question
exp. string to replace;
150941_3D-glass-green-effect-hd-wallpapers_jpg
I need to replace the character _jpg with .jpg but the extension can change so I need _ to be replaced with a point. I have tried strpos and then substr_replace but this removes everything after and include the _.
Tested with 2 extensions and also accounts for jpeg
$str1 = '150941_3D-glass-green-effect-hd-wallpapers_jpg';
$str2 = '150941_3D-glass-green-effect-hd-wallpapers_png';
$str1 = preg_replace('/_([a-z]{3,4})$/', '.$1', $str1);
$str2 = preg_replace('/_([a-z]{3,4})$/', '.$1', $str2);
echo $str1; //150941_3D-glass-green-effect-hd-wallpapers.jpg
echo $str2; //150941_3D-glass-green-effect-hd-wallpapers.png
Use the str_replace command.
$string = '150941_3D-glass-green-effect-hd-wallpapers_jpg';
$new = '.jpg' // or wathever you want.
$new_string = str_replace('_jpg', $new, $string);
You could do this:
$filename = "150941_3D-glass-green-effect-hd-wallpapers_jpg";
$position = strrpos($filename, "_");
if($position !== false) {
$filename = substr_replace($filename, ".", $position, 1);
}
Check below code
$imgExt = array('_jpg','_jpeg','_png','_bmp','_gif');
$replaceExt = array('.jpg','.jpeg','.png','.bmp','.gif');
$string = '150941_3D-glass-green-effect-hd-wallpapers_jpg';
$replacedText = str_replace($imgExt,$replaceExt,$string);
<?php
$o = "150941_3D-glass-green-effect-hd-wallpapers_jpg";
$o = preg_replace("/_([^_]+)$/", ".\\1", $o);
echo $o;
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
Questions asking for code must demonstrate a minimal understanding of the problem being solved. Include attempted solutions, why they didn't work, and the expected results. See also: Stack Overflow question checklist
Closed 9 years ago.
Improve this question
I have a UTF8 string that contains letters and digits. For example:
"Hello World 37. What? 24 last 6650"
and I want to reverse only the digits but keep the numbers in the same place.
The output should be:
"Hello World 73. What? 42 last 0566"
echo preg_replace_callback('/\d+/', function (array $m) { return strrev($m[0]); }, $string);
Before I posted the question, I thought about it and got an idea that works for me, so I'm only posting this question to enrich the database.
function reverseNumbersInString($str){
$tokens = explode(" ", $str);
$res = "";
for ($i = 0; $i < sizeof($tokens); $i++){
if (intval($tokens[$i] > 0 )){
$tokens[$i] = strrev($tokens[$i]);
}
$res .= " " . $tokens[$i];
}
return $res;
}
Maybe something like this:
$string = "Hello World 37. What? 24 last 6650";
preg_match_all('/\d+/', $string, $matches, PREG_OFFSET_CAPTURE);
foreach ($matches[0] as $numberData) {
$numberArray = str_split($numberData[0]);
$reversedNumber = implode('', array_reverse($numberArray));
$string = substr_replace($string, $reversedNumber, $numberData[1], strlen($numberData[0]));
}
This should do it:
$stringWithReversedNumbers = preg_replace_callback(
'/\d+/',
function ($matches) {
return strrev($matches[0]);
},
$originalString
);
Alternatively, if you ONLY want to operate on numbers that are distinct words (i.e. not part of another word, as in if you want hello123goodbye to remain unmodified because the 123 isn't a word by itself), change \d+ to \b\d+\b
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
Questions asking for code must demonstrate a minimal understanding of the problem being solved. Include attempted solutions, why they didn't work, and the expected results. See also: Stack Overflow question checklist
Closed 9 years ago.
Improve this question
I am getting Output value like 0.000098, 0.000854.
But I need 98, 854 instead.
How to do this?
<?php
$str = '0.00009801';
$r = array();
$ret = preg_match('/[1-9]+[0-9]+/', $str, $r);
echo $r[0];
You can use
$num = '0.000098000';
$newNum = preg_replace('/^[0\.]+/', '', $num);
The $newNum will contain the required output (98000 in the case above) after replacing all the 0 and . from the starting.
So you want to take a string, split it by a comma and remove spaces , multiply by 1000000 then put it back together. Try doing this:
$str = "0.000098, 0.000854";
echo implode(",",array_map(function($a){ return 1000000 * trim($a); },explode(",", $str)));
or in a slightly more readable form:
$parts = explode(",", $str);
$parts = array_map(function($a) { return 1000000 * trim($a); }, $parts);
echo implode(",", $parts);
function convertVal($value) {
for($i=0;$i<strlen($value);$i++){
$a = strpos($value,substr($value,$i,$i+1));
if($a>0){
$pos = substr($value,$a-1,strlen($value));
}
}
return $pos;
}
echo convertVal("0000980");
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
Questions asking for code must demonstrate a minimal understanding of the problem being solved. Include attempted solutions, why they didn't work, and the expected results. See also: Stack Overflow question checklist
Closed 9 years ago.
Improve this question
If the first word of a sentence is "The" I want to replace it to the end with a comma before it so for example if I have the movie title: The Hunger Games, I want it to become: Hunger Games, The
Is this possible and if it is how can I get it working?
Please try this:
<?
$str = 'The Hunger Games';
if (strtolower(substr($str,0,3)) == "the"){
$str = trim(substr($str,3)).', The';
}
echo $str;
?>
WORKING CODE
Use:
echo custom_func('The Hunger Games');
Function:
function custom_func($s) {
$s = trim(preg_replace('~\s+~', ' ', $s));
$a = explode(' ', $s);
if (strtolower($a[0]) != 'the' || count($a) < 2) return $s;
$the = array_shift($a);
return implode(' ', $a) . ', ' . $the;
}
Demo.
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
Questions asking for code must demonstrate a minimal understanding of the problem being solved. Include attempted solutions, why they didn't work, and the expected results. See also: Stack Overflow question checklist
Closed 9 years ago.
Improve this question
Need to transform
PROP_RESOURCE_TYPE
to
propResourceType
or
setPropResourceType
Number of _ and string length are not fixed.
I'm not really into preg_replace,
could you help me out
lcfirst(implode(array_map('ucfirst', explode('_', strtolower($str)))));
For completeness, an example of how a regular expression could help:
// match each underscore followed by a letter
echo preg_replace_callback('/_([a-z])/', function($m) {
return strtoupper($m[1]); // upper case the letter
}, strtolower('PROP_RESOURCE_TYPE'));
One possible solution:
<?php
$step1 = strtolower("PROP_RESOURCE_TYPE"); // prop_resource_type
$step2 = str_replace("_"," ",$step1); // prop resource type
$step3 = ucwords($step2); // Prop Resource Type
$step4 = str_replace(" ","",$step3); // PropResourceType
$step5 = "set".$step4;
?>
For additional completeness, an example of how a regular expression could help:
$subject = 'PROP_RESOURCE_TYPE';
// match uppercase varnames
echo preg_replace_callback('/[A-Z]+(?:_[A-Z]+)+/', function ($matches) {
list($varName) = $matches;
$varName = strtolower($varName);
$varName = strtr($varName, '_', ' ');
$varName = ucwords($varName);
$varName = strtr($varName, [' ' => '']);
$varName = 'set' . $varName;
// or:
// $varName[0] = strtolower($varName[0]);
return $varName;
}, $subject);
// php 5.3.0+
$initial = 'PROP_RESOURCE_TYPE';
$words = explode('_', $initial);
foreach($words as &$word){
$word = ucfirst(strtolower($word));
}
$final = implode($words);
echo $final;
// returns PropResourceType
// if you want a lowercase first letter just do
echo lcfirst($final);
// returns propResourceType
another solution
echo preg_replace("/_([a-z])/e", 'strtoupper("$1")', strtolower($str));
EDIT e modifier has been deprecated as of PHP 5.5.0, so be carefull
EDIT2 #hakre was so angry, that I decided to mention, that the only problem is: e can cause E_DEPRECATED level error (usually, turned off on all production servers). Anyway it still works on all PHP versions