I want to explode a string for all:
whitespaces (\n \t etc)
comma
hyphen (small dash). Like this >> -
But this does not work:
$keywords = explode("\n\t\r\a,-", "my string");
How to do that?
Explode can't do that. There is a nice function called preg_split for that. Do it like this:
$keywords = preg_split("/[\s,-]+/", "This-sign, is why we can't have nice things");
var_dump($keywords);
This outputs:
array
0 => string 'This' (length=4)
1 => string 'sign' (length=4)
2 => string 'is' (length=2)
3 => string 'why' (length=3)
4 => string 'we' (length=2)
5 => string 'can't' (length=5)
6 => string 'have' (length=4)
7 => string 'nice' (length=4)
8 => string 'things' (length=6)
BTW, do not use split, it is deprecated.
... or if you don't like regexes and you still want to explode stuff, you could replace multiple characters with just one character before your explosion:
$keywords = explode("-", str_replace(array("\n", "\t", "\r", "\a", ",", "-"), "-",
"my string\nIt contains text.\rAnd several\ntypes of new-lines.\tAnd tabs."));
var_dump($keywords);
This blows into:
array(6) {
[0]=>
string(9) "my string"
[1]=>
string(17) "It contains text."
[2]=>
string(11) "And several"
[3]=>
string(12) "types of new"
[4]=>
string(6) "lines."
[5]=>
string(9) "And tabs."
}
Related
how to replace group of double backslash in a string to *
for example:
\\\\a -> **a
\\\a -> *\a
\\a -> *a
\a -> \a
I try use both str_replace and preg_replace but it failed at the second case
str_replace('\\', '*', $str);
preg_replace('/\\\\/', '*', $str);
=> `\\\a` -> `**a`
the reason i want to do this is i want something same as Split string by delimiter, but not if it is escaped but
$str = '1|2\|2|3\\|4\\\|4';
$r = preg_split('~\\\\.(*SKIP)(*FAIL)|\|~s', $str);
var_dump($r);
give me.
0 => string '1' (length=1)
1 => string '2\|2' (length=4)
2 => string '3\|4\\' (length=6)
3 => string '4' (length=1)
i expect something like
[0] => 1
[1] => 2\|2
[2] => 3\\
[3] => 4\\\|4
php 5.4.45-2
A literal backslash in PHP single-quoted strings must be declared with 2 backslashes: to print 1|2\|2|3\\|4\\\|4 you need $str = '1|2\\|2|3\\\\|4\\\\\\|4';.
In a regex, the literal backslash can be matched with 4 backslashes.
Here is an updated PHP code:
$str = '1|2\\|2|3\\\\|4\\\\\\|4';
// echo $str . PHP_EOL; => 1|2\|2|3\\|4\\\|4
$r = preg_split('~\\\\.(*SKIP)(*FAIL)|\\|~s', $str);
var_dump($r);
Result:
array(4) {
[0]=>
string(1) "1"
[1]=>
string(4) "2\|2"
[2]=>
string(3) "3\\"
[3]=>
string(6) "4\\\|4"
}
And to obtain **a from \\a you can thus use
$str = '\\\\a';
$r = preg_replace('~\\\\~s', '*', $str);
See another demo
I have this code in my symfony controller:
$em=$this->getDoctrine()->getManager();
$queryIndex = $em->createQuery( 'SELECT g.index
FROM MySpaceMyBundle:Graphique g');
$result = $queryIndex->getArrayResult();
$arrayResult = array_map('current', $result);
var_dump($arrayResult);
return $this->render('MySpaceMyBundle:MyFolder:myTemplate.html.twig');
With my var_dump, I have this result:
array (size=10)
0 => string '1700.000' (length=8)
1 => string '1200.000' (length=8)
2 => string '1200.000' (length=8)
3 => string '1304.000' (length=8)
4 => string '1800.000' (length=8)
5 => string '2012.000' (length=8)
6 => string '2048.000' (length=8)
7 => string '1048.000' (length=8)
8 => string '3000.000' (length=8)
9 => string '5421.000' (length=8)
But for the obHighchartBundle (using highchart.js) the result I want is:
[1700,1200,1200,1304,1800,2012,2048,1048,3000,5421]
How can I proceed?
Note that I need to pass a numeric array (the values are decimal types in my database), not array with strings.
Like this?
$result = [];
foreach ($arrayResult as $value) {
$result[] = (int) $value
}
var_dump($result);
You can use a tiny tips like array_walk function to cast your values as float to prevent highchart issue. See the documentation for this function:
http://php.net/manual/fr/function.array-walk.php
Here an example of the tiny function :
<?php
function forceFloat (&$aItems) {
$aItems = (float) $aItems;
}
$arrayResult = array("1.00","4.55","39494");
var_dump($arrayResult);
array_walk($arrayResult, 'forceFloat');
var_dump($arrayResult);
?>
The output :
array(3) {
[0]=>
string(4) "1.00"
[1]=>
string(4) "4.55"
[2]=>
string(5) "39494"
}
array(3) {
[0]=>
float(1)
[1]=>
float(4.55)
[2]=>
float(39494)
}
Best Regards,
TGA
I have this kind of string :
$string = "<strong>Blabla1</strong> Blaabla2<br /> Blaabla3 <strong>Blaabla4</strong> Blaabla5 Blaabla6<br /><br /> Blaabla7 <span style='color:#B22222;'>Blaabla8</span> Blaabla9";
I'm trying to explode each word where there is a " " or "<br />" with preg_split .
My conditions :
For each word (Blablax), I need to keep his tags like <strong>, <span>, <em>... but split him after a <br /> or more <br />
I tried this, thanks to another post on stackoverflow :
preg_split('/<br(\s\/)?>\K|\s/',$string,null,PREG_SPLIT_NO_EMPTY);
OUTPUT:
array (size=12)
0 => string '<strong>Blabla1</strong>' (length=24)
1 => string 'Blaabla2<br />' (length=14)
2 => string 'Blaabla3' (length=8)
3 => string '<strong>Blaabla4</strong>' (length=25)
4 => string 'Blaabla5' (length=8)
5 => string 'Blaabla6<br />' (length=14)
6 => string '<br' (length=3)
7 => string '/>' (length=2)
8 => string 'Blaabla7' (length=8)
9 => string '<span' (length=5)
10 => string 'style='color:#B22222;'>Blaabla8</span>' (length=38)
11 => string 'Blaabla9' (length=8)
Everything works except for index 6 and index 7 (see above in OUTPUT) and index 9 and index 10
What I'll exepect :
array (size=12)
0 => string '<strong>Blabla1</strong>' (length=24)
1 => string 'Blaabla2<br />' (length=14)
2 => string 'Blaabla3' (length=8)
3 => string '<strong>Blaabla4</strong>' (length=25)
4 => string 'Blaabla5' (length=8)
5 => string 'Blaabla6<br /><br />' (length=14)
6 => string 'Blaabla7' (length=8)
7 => string '<span style='color:#B22222;'>Blaabla8</span>' (length=45)
8 => string 'Blaabla9' (length=8)
See index 5 and index 7
My regex works if I have just one <br /> but if more than one, there is a mistakes... idem if I have a <span style...>
Thanks !
$string = "<strong>Blabla1</strong> Blaabla2<br /> Blaabla3 <strong>Blaabla4</strong> Blaabla5 Blaabla6<br /><br /> Blaabla7 <span style='color:#B22222;'>Blaabla8</span> Blaabla9";
$matches = preg_split('/(<br.*?>|<span.*>)+\K|\s/sim', $string, null, PREG_SPLIT_NO_EMPTY );
var_dump($matches);
/*
array(9) {
[0]=>
string(24) "<strong>Blabla1</strong>"
[1]=>
string(14) "Blaabla2<br />"
[2]=>
string(8) "Blaabla3"
[3]=>
string(25) "<strong>Blaabla4</strong>"
[4]=>
string(8) "Blaabla5"
[5]=>
string(20) "Blaabla6<br /><br />"
[6]=>
string(8) "Blaabla7"
[7]=>
string(44) "<span style='color:#B22222;'>Blaabla8</span>"
[8]=>
string(8) "Blaabla9"
}
*/
DEMO
Looking at your expected array at index 5 and index 7, you probably want this regex:
preg_split('~(?:</?[a-zA-Z0-9][^>]*+>|\S)++\K|\s~',$string,null,PREG_SPLIT_NO_EMPTY);
Demo on ideone
Output:
array(9) {
[0]=>
string(24) "<strong>Blabla1</strong>"
[1]=>
string(14) "Blaabla2<br />"
[2]=>
string(8) "Blaabla3"
[3]=>
string(25) "<strong>Blaabla4</strong>"
[4]=>
string(8) "Blaabla5"
[5]=>
string(20) "Blaabla6<br /><br />"
[6]=>
string(8) "Blaabla7"
[7]=>
string(44) "<span style='color:#B22222;'>Blaabla8</span>"
[8]=>
string(8) "Blaabla9"
}
The regex attempts to match a full tag, and if a full tag can't be consumed, it will consume one non-space character, then rinse and repeat. This will prevent tags from being split, which gives expected output for index 5 and 7.
I wouldn't recommend doing this with regex, though. I didn't consult the HTML specs when writing the regex, so the regex is very brittle and may break on input in the wild. You might want to learn how to parse HTML properly with one of the libraries listed in this question: How do you parse and process HTML/XML in PHP?
Here is the regex
((?:<br\s*\/?>)+)|(?<!<br)\s+(?!\/?>)
Use this with preg_replace using $1\n as a replacement string, and then you can split by newline to get the array (removing empty ones).
See demo.
I want to develop website with slight automated process or header, menu, navigation bar, footer etc, which uses markdown technique.
for example a navigationbar.md will contain only link text and link address, i want get those details individually (link and text without parsed html format) into variables or parameters in php.
* [Dog][0]
* [German Shepherd][1]
* [Belgian Shepherd][2]
* [Malinois][3]
* [Groenendael][4]
* [Tervuren][5]
* [Cat][6]
* [Siberian][7]
* [Siamese][8]
[0]:(http://google.com)
[1]:(http://google.com)
[2]:(http://google.com)
[3]:(http://google.com)
[4]:(http://google.com)
[5]:(http://google.com)
[6]:(http://google.com)
[7]:(http://google.com)
[8]:(http://google.com)
if don't need any html here id want want nested array contain link text and link address
this structure of markdown will create html output as follow
but i need those list as nested array to perform defined tasks.
let me know if this works.. is their any chance for it
expected output
array (size=9)
0 =>
array (size=2)
0 => string 'Dog' (length=3)
1 => string 'http://google.com' (length=17)
1 =>
array (size=2)
0 => string 'German Shepherd' (length=15)
1 => string 'http://yahoo.com' (length=16)
2 =>
array (size=2)
0 => string 'Belgian Shepherd' (length=16)
1 => string 'http://duckduckgo.com' (length=21)
2 =>
array (size=2)
0 => string 'Malinois' (length=8)
1 => string 'http://amazon.com' (length=17)
2 =>
array (size=2)
0 => string 'Groenendael' (length=11)
1 => string 'http://metallica.com' (length=20)
3 =>
array (size=2)
0 => string 'Tervuren' (length=8)
1 => string 'http://microsoft.com' (length=20)
3 =>
array (size=2)
0 => string 'Cat' (length=3)
1 => string 'http://ibm.com' (length=14)
2 =>
array (size=2)
0 => string 'Siberian' (length=8)
1 => string 'http://apple.com' (length=16)
3 =>
array (size=2)
0 => string 'Siamese' (length=7)
1 => string 'http://stackoverflow.com' (length=24)
This should work. I have provided all the explanation in the comments in the code. This works -
/**
This function takes a strings- $text and $links_text.
For each text value that matches the regular expression, the link
from the $links_text is extracted and given as output.
This returns an array consisting of the text mapped to their links.
It will return a single array if there only single text value, and
a nested array if more than one text is found.
Eg:
INPUT:
var_dump(text_link_map("* [Dog][0]", "[0]:(http://google.com)[1]:(http://yahoo.com)"));
OUTPUT:
array
0 => string 'Dog' (length=3)
1 => string 'http://google.com' (length=17)
*/
function text_link_map($text, $links_text){
$regex= "/\*\s+\[([a-zA-Z0-9\-\_ ]+)\]\[([0-9]+)\]/";
if(preg_match_all($regex, $text, $matches)){
$link_arr = Array();
/*
For each of those indices, find the appropriate link.
*/
foreach($matches[2] as $link_index){
$links = Array();
$link_regex = "/\[".$link_index."\]\:\((.*?)\)/";
if(preg_match($link_regex,$links_text,$links)){
$link_arr[] = $links[1];
}
}
if(count($matches[1]) == 1){
return Array($matches[1][0], $link_arr[0]);
}else{
$text_link = array_map(null, $matches[1], $link_arr);
return $text_link;
}
}else{
return null;
}
}
/**
Function that calls recursive index, and returns it's output.
This is is needed to pass initial values to recursive_index.
*/
function indent_text($text_lines, $links){
$i = 0;
return recursive_index($i, 0, $text_lines, $links);
}
/**
This function creates a nested array out of the $text.
Each indent is assumed to be a single Tab.It is dictated by the
$indent_symbol variable.
This function recursively calls itself when it needs to go from
one level to another.
*/
function recursive_index(&$index, $curr_level, $text, $links){
$indent_symbol = "\t";
$result = Array();
while($index < count($text)){
$line = $text[$index];
$level = strspn($line, $indent_symbol);
if($level == $curr_level){
$result[] = text_link_map($line, $links);
}elseif($level > $curr_level){
$result[count($result) - 1][] = recursive_index($index, $curr_level + 1, $text, $links);
if($index > count($text)){
break;
}else{
$index--;
}
}elseif($level < $curr_level){
break;
}
$index += 1;
}
return $result;
}
$file_name = "navigationbar.md";
$f_contents = file_get_contents($file_name);
//Separate out the text and links part.
//(Assuming the text and the links will always be separated with 2 \r\n)
list($text, $links) = explode("\r\n\r\n", $f_contents);
//Get the nested array.
$formatted_arr = indent_text(explode("\r\n", $text), $links);
var_dump($formatted_arr);
This is the output of the code. It matches your requirements -
/*
OUTPUT
*/
array(4) {
[0]=>
array(2) {
[0]=>
string(3) "Dog"
[1]=>
string(17) "http://google.com"
}
[1]=>
array(2) {
[0]=>
string(15) "German Shepherd"
[1]=>
string(16) "http://yahoo.com"
}
[2]=>
array(3) {
[0]=>
string(16) "Belgian Shepherd"
[1]=>
string(21) "http://duckduckgo.com"
[2]=>
array(3) {
[0]=>
array(2) {
[0]=>
string(8) "Malinois"
[1]=>
string(17) "http://amazon.com"
}
[1]=>
array(2) {
[0]=>
string(11) "Groenendael"
[1]=>
string(20) "http://metallica.com"
}
[2]=>
array(2) {
[0]=>
string(8) "Tervuren"
[1]=>
string(20) "http://microsoft.com"
}
}
}
[3]=>
array(3) {
[0]=>
string(3) "Cat"
[1]=>
string(14) "http://ibm.com"
[2]=>
array(2) {
[0]=>
array(2) {
[0]=>
string(8) "Siberian"
[1]=>
string(16) "http://apple.com"
}
[1]=>
array(2) {
[0]=>
string(7) "Siamese"
[1]=>
string(24) "http://stackoverflow.com"
}
}
}
}
To check, the contents of navigationbar.md is -
* [Dog][0]
* [German Shepherd][1]
* [Belgian Shepherd][2]
* [Malinois][3]
* [Groenendael][4]
* [Tervuren][5]
* [Cat][6]
* [Siberian][7]
* [Siamese][8]
[0]:(http://google.com)
[1]:(http://yahoo.com)
[2]:(http://duckduckgo.com)
[3]:(http://amazon.com)
[4]:(http://metallica.com)
[5]:(http://microsoft.com)
[6]:(http://ibm.com)
[7]:(http://apple.com)
[8]:(http://stackoverflow.com)
Certain assumptions in the code -
The part separating the text(i.e the "* [Dog][0]" part) and the link part(i.e the "[0]:(http://google.com)") are assumed to always be
separated by 2 newlines.
Each parent child differ from a single Tab("\t").
You can test by changing the tabs between text in navigationbar.md.
Hope it helps.
What is the quickest approach to splitting a string into its leading spaces and the rest of it?
····sth should become array("····", "sth") and ·sth· - array("·", "sth·")
* · = space
$result = preg_split('/^(\s*)/', ' test ', -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE);
outputs
array(2) {
[0]=>
string(2) " "
[1]=>
string(5) "test "
}
Here's a simpler approach:
$result = preg_split('/\b/', ' sth', 2);
It would output:
array (size=2)
0 => string ' ' (length=3)
1 => string 'sth' (length=3)