How can I parse this string
name:john;phone:12345;website:www.23.com;
into becoming like this
$name = "john";
$phone = "12345"
.....
because I want to save the parameter in one table column, I see joomla using this method to save the menu/article parameter.
Something like this(explode() is the way):
$string = 'name:john;phone:12345;website:www.23.com';
$array = explode(';',$string);
foreach($array as $a){
if(!empty($a)){
$variables = explode(':',$a);
$$variables[0] = $variables[1];
}
}
echo $name;
Working example
Please note: String must be like this, variable_name:value;variable_name2:value and the variable_name or variable cant contain ; or :
Here's how I'd do it:
Use explode() and split the string with ; as the delimiter.
Loop through the result array and explode() by :
Store the second part in a variable and push it into the result array
Optionally, if you want to convert the result array back into a string, you can use implode()
Code:
$str = 'name:john;phone:12345;website:www.23.com;';
$parts = explode(';', $str);
foreach ($parts as $part) {
if(isset($part) && $part != '') {
list($item, $value) = explode(':', $part);
$result[] = $value;
}
}
Output:
Array
(
[0] => john
[1] => 12345
[2] => www.23.com
)
Now, to get these values into variables, you can simply do:
$name = $result[0];
$phone = $result[1];
$website = $result[2];
Demo!
Use explode()
explode — Split a string by string
Description
Returns an array of strings, each of which is a substring of string formed by splitting it on boundaries formed by the string delimiter.
<?php
$string = "name:john;phone:12345;website:www.23.com;";
$pieces = explode(";", $string);
var_dump($pieces);
?>
Output
array(4) {
[0]=>
string(9) "name:john"
[1]=>
string(11) "phone:12345"
[2]=>
string(18) "website:www.23.com"
[3]=>
string(0) ""
}
DEMO
try this
<?php
$str = "name:john;phone:12345;website:www.23.com";
$array=explode(";",$str);
if(count($array)!=0)
{
foreach($array as $value)
{
$data=explode(":",$value);
echo $data[0]." = ".$data[1];
echo "<br>";
}
}
?>
Related
(Sorry for my bad English)
I have a string that I want to split into an array.
The corner brackets are multiple nested arrays.
Escaped characters should be preserved.
This is a sample string:
$string = '[[["Hello, \"how\" are you?","Good!",,,123]],,"ok"]'
The result structure should look like this:
array (
0 =>
array (
0 =>
array (
0 => 'Hello, \"how\" are you?',
1 => 'Good!',
2 => '',
3 => '',
4 => '123',
),
),
1 => '',
2 => 'ok',
)
I have tested it with:
$pattern = '/[^"\\]*(?:\\.[^"\\]*)*/s';
$return = preg_match_all($pattern, $string, null);
But this did not work properly. I do not understand these RegEx patterns (I found this in another example on this page).
I do not know whether preg_match_all is the correct command.
I hope someone can help me.
Many Thanks!!!
This is a tough one for a regex - but there is a hack answer to your question (apologies in advance).
The string is almost a valid array literal but for the ,,s. You can match those pairs and then convert to ,''s with
/,(?=,)/
Then you can eval that string into the output array you are looking for.
For example:
// input
$str1 = '[[["Hello, \\"how\\" are you?","Good!",,,123]],,"ok"]';
// replace , followed by , with ,'' with a regex
$pattern = '/,(?=,)/';
$replace = ",''";
$str2 = preg_replace($pattern, $replace, $str1);
// eval updated string
$arr = eval("return $str2;");
var_dump($arr);
I get this:
array(3) {
[0]=>
array(1) {
[0]=>
array(5) {
[0]=>
string(21) "Hello, "how" are you?"
[1]=>
string(5) "Good!"
[2]=>
string(0) ""
[3]=>
string(0) ""
[4]=>
int(123)
}
}
[1]=>
string(0) ""
[2]=>
string(2) "ok"
}
Edit
Noting the inherent dangers of eval the better option is to use json_decode with the code above e.g.:
// input
$str1 = '[[["Hello, \\"how\\" are you?","Good!",,,123]],,"ok"]';
// replace , followed by , with ,'' with a regex
$pattern = '/,(?=,)/';
$replace = ',""';
$str2 = preg_replace($pattern, $replace, $str1);
// eval updated string
$arr = json_decode($str2);
var_dump($arr);
If you can edit the code that serializes the data then it's a better idea to let the serialization be handled using json_encode & json_decode. No need to reinvent the wheel on this one.
Nice cat btw.
You might want to use a lexer in combination with a recursive function that actually builds the structure.
For your purpose, the following tokens have been used:
\[ # opening bracket
\] # closing bracket
".+?(?<!\\)" # " to ", making sure it's not escaped
,(?!,) # a comma, not followed by a comma
\d+ # at least one digit
,(?=,) # a comma followed by a comma
The rest is programming logic, see a demo on ideone.com. Inspired by this post.
class Lexer {
protected static $_terminals = array(
'~^(\[)~' => "T_OPEN",
'~^(\])~' => "T_CLOSE",
'~^(".+?(?<!\\\\)")~' => "T_ITEM",
'~^(,)(?!,)~' => "T_SEPARATOR",
'~^(\d+)~' => "T_NUMBER",
'~^(,)(?=,)~' => "T_EMPTY"
);
public static function run($line) {
$tokens = array();
$offset = 0;
while($offset < strlen($line)) {
$result = static::_match($line, $offset);
if($result === false) {
throw new Exception("Unable to parse line " . ($line+1) . ".");
}
$tokens[] = $result;
$offset += strlen($result['match']);
}
return static::_generate($tokens);
}
protected static function _match($line, $offset) {
$string = substr($line, $offset);
foreach(static::$_terminals as $pattern => $name) {
if(preg_match($pattern, $string, $matches)) {
return array(
'match' => $matches[1],
'token' => $name
);
}
}
return false;
}
// a recursive function to actually build the structure
protected static function _generate($arr=array(), $idx=0) {
$output = array();
$current = 0;
for($i=$idx;$i<count($arr);$i++) {
$type = $arr[$i]["token"];
$element = $arr[$i]["match"];
switch ($type) {
case 'T_OPEN':
list($out, $index) = static::_generate($arr, $i+1);
$output[] = $out;
$i = $index;
break;
case 'T_CLOSE':
return array($output, $i);
break;
case 'T_ITEM':
case 'T_NUMBER':
$output[] = $element;
break;
case 'T_EMPTY':
$output[] = "";
break;
}
}
return $output;
}
}
$input = '[[["Hello, \"how\" are you?","Good!",,,123]],,"ok"]';
$items = Lexer::run($input);
print_r($items);
?>
I have a string in a table field that looks like this:
part1=1,part2=S,part3=Y,part4=200000
To call it from the table I do this:
while($row = mysqli_fetch_array($result)) {
$row['mystring'];
}
My problem is that I need to separate the parts into variables for example:
From this:
part1=1,part2=S,part3=Y,someothername=200000
To This:
$part1 = '1';
$part2 = 'S';
$part3 = 'Y';
$someothername = '200000';
How can I do this?
Use like this
parse_str( str_replace(",", "&", "part1=1,part2=S,part3=Y,someothername=200000") );
Use with there name like:
$part1 // return 1
$part2 // return S
$part3 // return Y
works like you want, see the demo
First split string:
$s = "part1=1,part2=S,part3=Y,part4=200000";
$a = explode(",",$s);
then foreach part of string ("part1=1"...) create an array and explode as variable:
foreach($a as $k=>$v)
{
$tmp = explode("=",$v);
$tmp = array($tmp[0]=>$tmp[1]);
extract($tmp);
}
echo $part1;
If you use PHP 5.3+ you can use array_map
<?php
$string = 'part1=1,part2=S,part3=Y,part4=200000';
array_map(function($a){
$tmp = explode('=', $a, 2);
global ${$tmp[0]}; //make vars available outside of this function scope
${$tmp[0]} = $tmp[1];
}, explode(',', $string));
//Variables available outside of array_map scope
echo $part1 . '<br>';
echo $part2 . '<br>';
echo $part3 . '<br>';
echo $part4 . '<br>';
?>
Double explode your string to get the wanted field :
$string ="part1=1,part2=S,part3=Y,someothername=200000";
foreach (explode(',', $string) as $parts) {
$part = explode('=', $parts);
$array[$part[0]] = $part[1];
}
var_dump($array);
Output :
array(4) {
["part1"]=>
string(1) "1"
["part2"]=>
string(1) "S"
["part3"]=>
string(1) "Y"
["someothername"]=>
string(6) "200000"
}
I wouldn't suggest the use of variable variables to get the output as :
$part1 = ...
$part2 = ...
Using an array is probably the easier and safest way to do here. As suggested in my comment, it avoid potential conflicts with variable names.
You can use something called 'Variable variables'. You can declare the content of a variable as a variable, if you use double dollar sign, instead of a single one. For example:
$fruit = "apple";
$$fruit = "this is the apple variable";
echo $apple;
It would output the following:
this is the apple variable
You have to be a bit more tricky with defining variables from an array, as you'd have to enclode the original variable in curly brackets. (for example: ${$fruit[0]})
So the answer to your question is:
$parts = "part1=1,part2=S,part3=Y,someothername=200000";
$parts_array = explode(",", $parts);
foreach ($parts_array as $value) {
$temp = explode("=", $value);
${$temp[0]} = $temp[1];
}
echo "$part1, $part2, $part3, $someothername";
PHPFiddle link: http://phpfiddle.org/main/code/adyb-ug5n
I want to use regular expression to filter substrings from this string
eg: hello world #level:basic #lang:java:php #...
I am trying to produce an array with a structure like this:
Array
(
[0]=> hello world
[1]=> Array
(
[0]=> level
[1]=> basic
)
[2]=> Array
(
[0]=> lang
[1]=> java
[2]=> php
)
)
I have tried preg_match("/(.*)#(.*)[:(.*)]*/", $input_line, $output_array);
and what I have got is:
Array
(
[0] => hello world #level:basic #lang:java:php
[1] => hello world #level:basic
[2] => lang:java:php
)
In this case then I will have to apply this regex few times to the indexes and then apply a regex to filter the colon out. My question is: is it possible to create a better regex to do all in one go? what would the regex be? Thanks
You can use :
$array = explode("#", "hello world #level:basic #lang:java:php");
foreach($array as $k => &$v) {
$v = strpos($v, ":") === false ? $v : explode(":", $v);
}
print_r($array);
do this
$array = array() ;
$text = "hello world #level:basic #lang:java:php";
$array = explode("#", $text);
foreach($array as $i => $value){
$array[$i] = explode(":", trim($value));
}
print_r($array);
Got something for you:
Rules:
a tag begins with #
a tag may not contain whitespace/newline
a tag is preceeded and followed by whitespace or line beginning/ending
a tag can have several parts divided by :
Example:
#this:tag:matches this is some text #a-tag this is no tag: \#escaped
and this one tag#does:not:match
Function:
<?php
function parseTags($string)
{
static $tag_regex = '#(?<=\s|^)#([^\:\s]+)(?:\:([^\s]+))*(?=\s|$)#m';
$results = array();
preg_match_all($tag_regex, $string, $results, PREG_SET_ORDER | PREG_OFFSET_CAPTURE);
$tags = array();
foreach($results as $result) {
$tag = array(
'offset' => $result[0][1],
'raw' => $result[0][0],
'length' => strlen($result[0][0]),
0 => $result[1][0]);
if(isset($result[2]))
$tag = array_merge($tag, explode(':', $result[2][0]));
$tag['elements'] = count($tag)-3;
$tags[] = $tag;
}
return $tags;
}
?>
Result:
array(2) {
[0]=>array(7) {
["offset"]=>int(0)
["raw"]=>string(17) "#this:tag:matches"
["length"]=>int(17)
[0]=>string(4) "this"
[1]=>string(3) "tag"
[2]=>string(7) "matches"
["elements"]=>int(3)
}
[1]=>array(5) {
["offset"]=>int(36)
["raw"]=>string(6) "#a-tag"
["length"]=>int(6)
[0]=>string(5) "a-tag"
["elements"]=>int(1)
}
}
Each matched tag contains
the raw tag text
the tag offset and original length (e.g. to replace it in the string later with str... functions)
the number of elements (to safely iterate for($i = 0; $i < $tag['elements']; $i++))
This might work for you:
$results = array() ;
$text = "hello world #level:basic #lang:java:php" ;
$parts = explode("#", $text);
foreach($parts as $part){
$results[] = explode(":", $part);
}
var_dump($results);
Two ways using regex, note that you somehow need explode() since PCRE for PHP doesn't support capturing a subgroup:
$string = 'hello world #level:basic #lang:java:php';
preg_match_all('/(?<=#)[\w:]+/', $string, $m);
foreach($m[0] as $v){
$example1[] = explode(':', $v);
}
print_r($example1);
// This one needs PHP 5.3+
$example2 = array();
preg_replace_callback('/(?<=#)[\w:]+/', function($m)use(&$example2){
$example2[] = explode(':', $m[0]);
}, $string);
print_r($example2);
This give you the array structure you are looking for:
<pre><?php
$subject = 'hello world #level:basic #lang:java:php';
$array = explode('#', $subject);
foreach($array as &$value) {
$items = explode(':', trim($value));
if (sizeof($items)>1) $value = $items;
}
print_r($array);
But if you prefer you can use this abomination:
$subject = 'hello world #level:basic #lang:java:php';
$pattern = '~(?:^| ?+#)|(?:\G([^#:]+?)(?=:| #|$)|:)+~';
preg_match_all($pattern, $subject, $matches);
array_shift($matches[1]);
$lastKey = sizeof($matches[1])-1;
foreach ($matches[1] as $key=>$match) {
if (!empty($match)) $temp[]=$match;
if (empty($match) || $key==$lastKey) {
$result[] = (sizeof($temp)>1) ? $temp : $temp[0];
unset($temp);
}
}
print_r($result);
For my game I'm coding a console that sends messages via AJAX and then receives output from the server.
For example, an input would be:
/testmessage Hello!
However, I would also need to parse the quotes e.g.:
/testmessage "Hello World!"
However, since I am simply exploding the string with spaces, PHP sees "Hello and World!" as separate parameters. How do I make PHP think that "Hello World!" is one parameter?
Right now I'm using the following code to parse the command:
// Suppose $inputstring = '/testmessage "Hello World!"';
$inputstring = substr($inputstring, 1);
$parameters = explode(" ", $inputstring);
$command = strtolower($parameters[0]);
switch ($command) {
case "testmessage":
ConsoleDie($parameters[1]);
break;
}
Thank you in advance.
This code will do what you want:
$params = preg_split('/(".*?")/', '/testmessage "Hello World!" 1 2 3', -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE);
$realParams = array();
foreach($params as $param)
{
$param = trim($param);
if ($param == '')
continue;
if (strpos($param, '"') === 0)
$realParams = array_merge($realParams, array(trim($param, '"')));
else
$realParams = array_merge($realParams, explode(' ', $param));
}
unset($params);
print_r($realParams);
that print:
array(5) {
[0]=>
string(12) "/testmessage"
[1]=>
string(14) "Hello World!"
[2]=>
string(1) "1"
[3]=>
string(1) "2"
[4]=>
string(1) "3"
}
Note: As you can see the first parameter is the command
Hope this code is more 'understandable'
$input = $inputstring = '/testmessage "Hello World!" "single phrase" level two';
// find the parameters surrounded with quotes, grab only the value (remove "s)
preg_match_all('/"(.*?)"/', $inputstring, $quotes);
// for each parameters with quotes, put a 'placeholder' like {{1}}, {{2}}
foreach ($quotes[1] as $key => $value) {
$inputstring = str_replace($value, "{{{$key}}}", $inputstring);
}
// then separate by space
$parameters = explode(" ", $inputstring);
// replace the placeholders {{1}} with the original value
foreach ($parameters as $key => $value) {
if (preg_match('{{(\d+)}}', $value, $matches)) {
$parameters[$key] = $quotes[1][$matches[1]];
}
}
// here you go
print_r($parameters);
I may not have understood you fully, but if you are assuming that the first word is always a command word, and anything following is 'one parameter' you could do the following
$inputstring = substr($inputstring, 1);
$parameters = explode(" ", $inputstring);
// shift the first element off the array i.e. the command
$command = strtolower(array_shift($parameters));
// Glue the rest of the array together
$input_message = implode($parameters);
switch ($command) {
case "testmessage":
ConsoleDie($input_message);
break;
}
You can use the Symfony Console Component which offers a secure and clean way to get console inputs.
For your use case you should do:
use Symfony\Component\Console\Input\ArgvInput;
use Symfony\Component\Console\Input\InputDefinition;
use Symfony\Component\Console\Input\InputArgument;
$input = new ArgvInput(null, new InputDefinition(array(
new InputArgument('message', InputArgument::REQUIRED)
)));
$parameters = $input->getArguments(); // $parameters['message'] contains the first argument
I have a test string which is something like this:
digit{digit}digit
I want to break this string into 3 variables. For example, 40{1}2 should be split into 40 1 2. The string could be as big as 2034{345}1245. I assume regex would be the best way to split this string.
Here's what I have so far:
$productID = preg_match('/(.*?){/', $product);
$productOptionID = preg_match('/{(.*?)}/', $product);
$optionValueID = preg_match('/}(.*?)/', $product);
No need for regular expressions here:
$str = '40{1}2';
sscanf($str, '%d{%d}%d', $part_1, $part_2, $part_3);
// $part_1 would equal: 40
// $part_2 would equal: 1
// $part_3 would equal: 2
With this method, the variables are already typecast to integers.
Try this instead:
preg_match('/^(\d+)\{(\d+)\}(\d+)$/', '123{456}789', $matches)
$productId = $matches[1];
$productOptionId = $matches[2];
$productValueId = $matches[3];
How about preg_split :
$str = '123{456}789';
$arr = preg_split("/[{}]/", $str);
print_r($arr);
output:
Array
(
[0] => 123
[1] => 456
[2] => 789
)
I would personally create a simple function that can manage the process of fetching the data from the string like so:
function processID($string)
{
$result = array();
$c = 0;
for($i = 0; $i < strlen($string); $i++)
{
if(!isset($result[$c]))
{
$result[$c] = "";
}
if($string[$i] == "{" || $string[$i] == "}")
{
$c++;
continue;
}
$result[$c] .= $string[$i];
}
return $result;
}
and then just use like:
$result = processID("2034{345}1245");
The outputted result would be like so:
array(3) {
[0]=>
string(4) "2034"
[1]=>
string(3) "345"
[2]=>
string(4) "1245"
}
and a working example can be found here: http://codepad.org/7k5tAzuy