I have a JSON string that may contain one or multiple base64 images.
Here is an example of the JSON string and the REGEX which only find the first occurance.
<?php
preg_match_all('/(data:\s*\S*\/(\w*);base64,[^\"]+)/', $content, $result);
Here is my content,
<?php
$content = '{"textArea":"one","signature":"data:image\/png;base64,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",'.
'"textArea2":"three","signature2":"data:image\/png;base64,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",'.
'"textArea3":"fourrrr4444"}';
Thanks.
This is much easier if you first json_decode the text; then you can simply check each value in the decoded result to see if it begins with a valid data:image and if so, add it to your output:
$data = json_decode($content, true);
$images = array();
foreach ($data as $value) {
if (preg_match('#^data:image.*?base64,#', $value)) {
$images[] = $value;
}
}
print_r($images);
Output:
Array
(
[0] => data:image/png;base64,iVBORw0KGgoAAAANSU...
[1] => data:image/png;base64,iVBORw0KGgoAAAANSU...
[2] => data:image/png;base64,iVBORw0KGgoAAAANSU...
)
Demo on 3v4l.org
The regex syntax gets tricky here, because you have the literal text image\/png in your input. The backslash must be escaped six times here, four for a literal backslash, and two for an escape for the forward slash (which is also the delimiter used in the call to preg_match_all). Consider this script:
$content = '{"textArea":"one","signature":"data:image\/png;base64,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",'.
'"textArea2":"three","signature2":"data:image\/png;base64,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",'.
'"textArea3":"fourrrr4444"}';
preg_match_all("/\"data:image\\\\\\/png;base64,([^\"]+)/", $content, $matches);
print_r($matches[1]);
This prints:
Array
(
[0] => iVBORw0KGgoAAAANSUhEUgAABFUAAA...
[1] => iVBORw0KGgoAAAANSUhEUgAABFUAAA...
[2] => iVBORw0KGgoAAAANSUhEUgAABFUAAA...
)
Related
Example:
$string = "This is some text written on 2010-07-18.";
preg_match('|(?<date>\d\d\d\d-\d\d-\d\d)|i', $string, $arr_result);
print_r($arr_result);
Returns:
Array
(
[0] => 2010-07-18
[date] => 2010-07-18
[1] => 2010-07-18
)
But I want it to be:
Array
(
[date] => 2010-07-18
)
In PHP's PDO object there is an option that is filtering results from database by removing these duplicate numbered values : PDO::FETCH_ASSOC. But I haven't seen similar modifier for the PCRE functions in PHP yet.
How to return only named groups with preg_match or preg_match_all?
This is currently (PHP7) not possible.
You will always get a mixed type array, containing numeric and named keys.
Lets quote the PHP manual (http://php.net/manual/en/regexp.reference.subpatterns.php):
This subpattern will then be indexed in the matches array by its
normal numeric position and also by name.
To solve the problem the following code snippets might help:
1. filter the array by using an is_string check on the array key (for PHP5.6+)
$array_filtered = array_filter($array, "is_string", ARRAY_FILTER_USE_KEY);
2. foreach over the elements and unset if array key is_int() (all PHP versions)
/**
* #param array $array
* #return array
*/
function dropNumericKeys(array $array)
{
foreach ($array as $key => $value) {
if (is_int($key)) {
unset($array[$key]);
}
}
return $array;
}
Its a simple PHP function named dropNumericKeys(). Its for the post-processing of an matches array after a preg_match*() run using named groups for matching. The functions accepts an $array. It iterates the array and removes/unsets all keys with integer type, leaving keys with string type untouched. Finally, the function returns the array with "now" only named keys.
Note: The function is for PHP downward compatiblity. It works on all versions. The array_filter solution relies on the constant ARRAY_FILTER_USE_KEY, which is only available on PHP5.6+. See http://php.net/manual/de/array.constants.php#constant.array-filter-use-key
preg_match does not have any flag or option that it only returns named matches (yet). So what you want is not directly possible. However you can remove all items with non-fitting keys from your matches array and then you get what you're looking for:
$matches = array_intersect_key($matches, array_flip(array('name', 'likes')));
I do not think you can make preg_* do it, but you can do it with a simple loop. But I don't see why those elements pose a problem.
It also possible to unset all numeric indexes before return:
foreach (range(0, floor(count($arr_result) / 2)) as $index) {
unset($arr_result[$index]);
}
Similar to the answer that hakre posted above, I use this snippet to get just the named parameters:
$subject = "This is some text written on 2010-07-18.";
$pattern = '|(?<date>\d\d\d\d-\d\d-\d\d)|i';
preg_match_all($pattern, $subject, $matches, PREG_SET_ORDER);
echo '<pre>Before Diff: ', print_r($matches, 1), '</pre>';
$matches = array_diff_key($matches[0], range(0, count($matches[0])));
echo '<pre>After Diff: ', print_r($matches, 1), '</pre>';
...which produces this:
Before Array
(
[0] => Array
(
[0] => 2010-07-18
[date] => 2010-07-18
[1] => 2010-07-18
)
)
After Array
(
[date] => 2010-07-18
)
I read in your post that these are possible overloads of future memory etc ...
In this case, why no't can be solved with an unset():
$string = "This is some text written on 2010-07-18.";
preg_match('|(?<date>\d{4}-\d{2}-\d{2})|i', $string, $arr_result);
$date = array("date" => $arr_result['date']);
unset($arr_result, $string);//delete array and string preg_match origen
print_r($date);
//or create a new:
// $arr_result = $date;
//print_r($arr_result);
You could use T-Regx and go with group() or namedGroups() which only returns named capturing groups.
<?php
$subject = "This is some text written on 2010-07-18.";
pattern('(?<date>\d\d\d\d-\d\d-\d\d)', 'i')->match($subject)->first(function ($match) {
$date = $match->get('date');
// 2010-07-18
$groups = $match->namedGroups();
// [
// 'date' => '2010-07-18'
// ]
});
I use some of introduced codes and this is the final code works on php 5.6+:
$re = '/\d+\r\n(?<start>[\d\0:]+),\d+\s--\>\s(?<end>[\d\0:]+),.*\r\nHOME.*\r\nGPS\((?<x>[\d\.]+),(?<y>[\d\.]+),(?<d>[\d\.]+)\)\sBAROMETER\:(?<h>[\d\.]+)/';
$str= file_get_contents($srtFile);
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
echo '<pre>';
$filtered=array_map(function ($d){
return $array_filtered = array_filter($d, "is_string", ARRAY_FILTER_USE_KEY);
},$matches);
var_dump($filtered);
if you are interested what it does it read position data from a str file that DJI drones generate while recording video.
Try this:
$string = "This is some text written on 2010-07-18.";
preg_match('|(?<date>\d\d\d\d-\d\d-\d\d)|i',$string,$arr_result);
echo $arr_result['date'];
I am scraping the following kind of strings from an external resource which I can't change:
["one item",0,0,2,0,1,"800.12"],
["another item",1,3,2,5,1,"1,713.59"],
(etc...)
I use the following code to explode the elements into an array.
<?php
$id = 0;
foreach($lines AS $line) {
$id = 0;
// remove brackets and line end comma's
$found_data[] = str_replace(array('],', '[',']', '"'), array('','','',''), $line);
// add data to array
$results[$id] = explode(',', $line);
}
Which works fine for the first line, but as the second line uses a comma for the thousands seperator of the last item, it fails there. So somehow I need to disable the explode to replace stuff between " characters.
If all values would be surrounded by " characters, I could just use something like
explode('","', $line);
However, unfortunately that's not the case here: some values are surrounded by ", some aren't (not always the same values are). So I'm a bit lost in how I should proceed. Anyone who can point me in the right direction?
You can use json_decode here since your input string appears to be a valid json string.
$str = '["another item",1,3,2,5,1,"1,713.59"]'
$arr = json_decode($str);
You can then access individual indices from resulting array or print the whole array using:
print_r($arr);
Output:
Array
(
[0] => another item
[1] => 1
[2] => 3
[3] => 2
[4] => 5
[5] => 1
[6] => 1,713.59
)
Thanks for taking a look at this. I'm using PHP. I have a string like so:
[QUOTE="name: Max-Fischer, post: 486662533, member: 123"]I don't so much dance as rhythmically convulse.[/QUOTE]
And I want to pull out the values in the quotes and create an associative array like so:
["name" => "Max-Fischer", "post" => "486662533", "member" => "123"]
Then, I would like to remove the opening and closing [QUOTE] tags and replace them with custom HTML like so:
<blockquote>Max-Fischer wrote: I don't so much dance as rhythmically convulse.</blockquote>
So the main problem is creating the preg_match() or preg_replace() to handle first: grabbing the values out in an array, and second: removing the tags and replacing them with my custom content. I can figure out how to use the array to create the custom HTML, I just can't figure how to use regular expressions well enough to achieve it.
I tried a match like this to get the attribute values:
/(\S+)=[\"\']?((?:.(?![\"\']?\s+(?:\S+)=|[>\"\']))+.)[\"\']?/
But this only returns:
[QUOTE
And that's not even addressing how to put the values (if I can get them) into an array.
Thanks in advance for your time.
Cheers.
If the tag you're looking for is always going to be quote, then perhaps something a little simpler is possible:
$s ='"[QUOTE="name: Max-Fischer, post: 486662533, member: 123"]I don\'t so much dance as rhythmically convulse.[/QUOTE]';
$r = '/\[QUOTE="(.*?)"\](.*)\[\/QUOTE\]/';
$m = array();
$arr = array();
preg_match($r, $s, $m);
// m[0] = the initial string
// m[1] = the string of attributes
// m[2] = the quote itself
foreach(explode(',', $m[1]) as $valuepair) { // split the attributes on the comma
preg_match('/\s*(.*): (.*)/', $valuepair, $mm);
// mm[0] = the attribute pairing
// mm[1] = the attribute name
// mm[2] = the attribute value
$arr[$mm[1]] = $mm[2];
}
print_r($arr);
print $m[2] . "\n";
this gives the following output:
Array
(
[name] => Max-Fischer
[post] => 486662533
[member] => 123
)
I don't so much dance as rhythmically convulse.
If you want to handle the case where there is more than one quote in the string, we can do this by modifying the regex to be slightly less greedy, and then using preg_match_all, instead of preg_match
$s ='[QUOTE="name: Max-Fischer, post: 486662533, member: 123"]I don\'t so much dance as rhythmically convulse.[/QUOTE]';
$s .='[QUOTE="name: Some-Guy, post: 486562533, member: 1234"]Quidquid latine dictum sit, altum videtur[/QUOTE]';
$r = '/\[QUOTE="(.*?)"\](.*?)\[\/QUOTE\]/';
// ^ <--- added to make it less greedy
$m = array();
$arr = array();
preg_match_all($r, $s, $m, PREG_SET_ORDER);
// m[0] = the first quote
// m[1] = the second quote
// m[0][0] = the initial string
// m[0][1] = the string of attributes
// m[0][2] = the quote itself
// element for each quote found in the string
foreach($m as $match) { // since there is more than quote, we loop and operate on them individually
$quote = array();
foreach(explode(',', $match[1]) as $valuepair) { // split the attributes on the comma
preg_match('/\s*(.*): (.*)/', $valuepair, $mm);
// mm[0] = the attribute pairing
// mm[1] = the attribute name
// mm[2] = the attribute value
$quote[$mm[1]] = $mm[2];
}
$arr[] = $quote; // we now build a parent array, to hold each individual quote
}
print_r($arr);
This gives output like:
Array
(
[0] => Array
(
[name] => Max-Fischer
[post] => 486662533
[member] => 123
)
[1] => Array
(
[name] => Some-Guy
[post] => 486562533
[member] => 1234
)
)
I managed to resolve yout problem: to get an associative array. I hope it will help you.
Here is code
$str = <<< PP
[QUOTE=" name : Max-Fischer,post : 486662533,member : 123 "]I don't so much dance as rhythmically convulse.[/QUOTE]
PP;
preg_match_all('/^\[QUOTE=\"(.*?)\"\](?:.*?)]$/', $str, $matches);
preg_match_all('/([a-zA-Z0-9]+)\s+:\s+([a-zA-Z0-9]+)/', $matches[1][0], $result);
$your_data = array_combine($result[1],$result[2]);
echo "<pre>";
print_r($your_data);
I want to extract matched parts of strings --digital part from an array
array("HK00003.Day","HK00005.Day").
<?php
$arr=array("HK00003.Day","HK00005.Day");
$result= array();
foreach ($arr as $item){
preg_match('/[0-9]+/',$item,$match);
array_push($result,$match[0]);
}
It can get the result :00003 00005,it seems tedious,preg_grep seems simple but the result is not what i want .
preg_grep('/[0-9]+/',$arr);
The output is "HK00003.Day","HK00005.Day", not 00003 00005,
is there more simple way to get the job done?
You can use preg_filter (which already uses preg_replace and does not require additional callback functions) to replace the each entry in the array with the number inside:
<?php
$arr = array("HK00003.Day","HK00005.Day");
$matches = preg_filter('/^.*?([0-9]+).*/', '$1',$arr);
print_r($matches);
?>
Output of a sample program:
Array
(
[0] => 00003
[1] => 00005
)
This should work for you:
(Here I just get rid off every character in your array which isn't a number with preg_replace())
<?php
$arr = ["HK00003.Day", "HK00005.Day"];
$result = preg_replace("/[^0-9]/", "", $arr);
print_r($result);
?>
output:
Array ( [0] => 00003 [1] => 00005 )
Your code is fine, not tedious at all. If you want a one-liner you can try something like this (remove everything that's not a digit):
array_push($result, preg_replace("~[^0-9]~", "", $item));
preg_grep return array entries that match the pattern！ Therefore, it returns an array of entry rather than the matching string
try below:
preg_match_all('/[0-9]+/',implode('-',$arr),$result);
I have this kind of string.
'"asdfasdf","123456", this is a message. OK'
What i want to do is declare variables according to the first, second quotation and the rest of the message until the OK...
(note: the length of the string inside the '' is not consistent)
$First = "asdfasdf"
$Second = "123456"
$Message = "this is a message"
is this even possible?
is there something like " "$First","$Second", "$Message" OK " kind of way?
TIA.
Is this a CSV file ?
Doesn't seem to, but if it was you should check out the csv functions of php, specifically str_getcsv.
If not, you should just do an explode by , or ", or any combination you think would be most accurate, and then go through each array item.
$string = '"asdfasdf","123456","this is a message. OK"';
$temp = explode('","',$string);
$array = array();
foreach($temp as $key=>$value){
//do stuff with $value and $key
}
You can use regular expressions, like this:
Code
$raw = '"asdfasdf","123456", this is a message. OK'; // this is your raw text
preg_match('/^"(?P<first>[^"]+)","(?P<second>[^"]+)",\s+(?P<message>.+?) OK/', $raw, $matches); // this looks for the pattern you defined and stores the matches in $matches
print_r($matches); // this just dumps out the array of matching substrings
Output
Array
(
[0] => "asdfasdf","123456", this is a message. OK
[first] => asdfasdf
[1] => asdfasdf
[second] => 123456
[2] => 123456
[message] => this is a message.
[3] => this is a message.
)
You can access the individual substrings as, for example, $matches['first'], $matches['second'], or $matches['message'].
PHP Demo
Regex Demo