I need to lower preg variable by one. Example:
$code = A4-7;
$new = preg_replace('/A([0-9])\-([0-9])/', 'S($1-1)-$2', $code);
I need to do something like that, so preg replace returns S3-7. Is there some way?
Try this (using preg_replace_callback)
$code = "A4-7";
function myfunc($matches)
{
return 'S'.($matches[1]-1).'-'.$matches[2];
}
echo preg_replace_callback("#A(\d)-(\d)#","myfunc",$code);
You will have to extract the values first, perform the mathematical operations on the extracted values and then reconstruct the string to achieve what you want.
For example:
<?php
$code = 'A4-7';
preg_match('/A([0-9])\-([0-9])/', $code, $matches);
$new = 'S'.($matches[1]-1).'-'.$matches[2];
?>
Related
Substr PHP
I have a string like http://domain.sf/app_local.php/foo/bar/33.
The last characters are the id of an element. Its length could be more than one, so I can not use:
substr($dynamicstring, -1);
In this case, it must be:
substr($dynamicstring, -2);
How can I get the characters after "/bar/" on the string without depending on the length?
To ensure you are getting an immediate section after the bar, use regular expressions:
preg_match('~/bar/([^/?&#]+)~', $url, $matches);
echo $matches[1]; // 33
You can use explode(), like this:
$id = explode('/',$var);
And take the element where you had the id.
You could use explode('/', $dynamicstring) to split the string into an array of the strings inbetween each /. Then you could use end() on the result of this to get the last part.
$id = end(explode('/', $dynamicstring));
Try this:
$dynamicstring = 'http://domain.sf/app_local.php/foo/bar/33';
// split your string into an array with /
$parts = explode('/', $dynamicstring);
// move the array pointer to the end
end($parts);
// return the current position/value of the $parts array
$id = current($parts);
// reset the array pointer to the beginning => 0
// if you want to do any further handling
reset($parts);
echo $id;
// $id => 33
Test it yourself here.
You can use a regular expression to do it:
$dynamicstring = "http://domain.sf/app_local.php/foo/bar/33";
if (preg_match('#/([0-9]+)$#', $dynamicstring, $m)) {
echo $m[1];
}
I tested it out myself before answering. Other answers are reasonable too, but this will work according to your need...
<?php
$url = "http://domain.sf/app_local.php/foo/bar/33";
$id = substr($url, strpos($url, "/bar/") + 5);
echo $id;
Please find the below answer.
$str = "http://domain.sf/app_local.php/foo/bar/33";
$splitArr = explode('/', explode('//', $str)[1]);
var_dump($splitArr[count($splitArr)-1]);
I'm trying to get all numeric before space/alpha in PHP string.
Example:
<?php
//string
$firstStr = '12 Car';
$secondStr = '412 8all';
$thirdStr = '100Pen';
//result I need
firstStr = 12
SecondStr = 412
thirdStr = 100
How do I can get all the number of a string just like example above?
I've an idea to get the position of first Alpha, then get all numeric before that position.
I've successfully get the position using
preg_match('~[a-z]~i', $value, $match, PREG_OFFSET_CAPTURE);
But I'm not done yet to get the numeric before the posisition.
How do I can do that, or anybody know how to fix my idea?
Anyhelp will be appreciated.
You don't need to use regex for strings like the examples you've shown, or any functions at all for that matter. You can just cast them to ints.
$number = (int) $firstStr; // etc.
The PHP rules for string conversion to number will handle it for you.
However, because of those rules, there are some other types of strings that this won't work for. For example, '-12 Car' or '412e2 8all'.
If you do use a regex, be sure to anchor it to the beginning of the string with ^ or it will match digits anywhere in the string as the other regex answers here do.
preg_match('/^\d+/', $string, $match);
$number = $match[0] ?? '';
Here's an extremely hackish approach that will work in most situations:
$s = "1001BigHairyCamels";
$n = intval($s);
$my_number = str_replace($n, '', $s);
$input = '100Pen';
if (preg_match('~(\d+)[ a-zA-Z]~', $input, $m)) {
echo $m[1];
}
This function will do the job!
<?php
function getInt($str){
preg_match_all('!\d+!', $str, $matches);
return $matches[0][0];
}
$firstStr = '12 Car';
$secondStr = '412 8all';
$thirdStr = '100Pen';
echo 'firstStr = '.getInt($firstStr).'<br>';
echo 'secondStr = '.getInt($secondStr).'<br>';
echo 'thirdStr = '.getInt($thirdStr);
?>
I'm trying to split a php string in to parts the first one include the delimiter but the second one doesn't
$string = "abc==123";
What I want exactly is to get
$string['0'] = "abc==";
$string['1'] = "123";
Thanks for help
Simple enough
<?php
$string = explode("==", $string);
$string[0] .= "==";
?>
I believe you want the function strstr
http://us1.php.net/strstr
You can use PHP's explode function,
$data = "abc==123";
$result = explode("==", $data);
echo $result[0]. "==";
echo $result[1];
index.php?option=com_virtuemart&Itemid=210&category_id=12&lang=is&limit=20&limitstart=180&page=shop.browse
and I would like to retrieve the Page parameter from the string and if that page parameter is equal to "shop.browse" than return a true boolean.
edit: ps. the string does not always look like this but it does always contain the page= parameter
Ive been messing with strpos function and others and I can't get this working and I need this code quickly so if anyone can point me in there right direction of the best approach.
Thanks
Use parse_url first to get just the query part, then use parse_str to get the values:
$query = parse_url($str,PHP_URL_QUERY);
parse_str($query, $match);
if ($match['page'] === 'shop.browse') {
// page=shop.browse
}
Note that this assumes your string is stored in a variable $str.
Check the parse_url() function.
$str = explode("?",$url);
$str = explode("&",$str[1]);
foreach($str as $k=>$v) {
$xxx = explode("=",$v);
$output[$xxx[0]] = $output[$xxx[1]];
}
echo $output["page"];
this way you get all the parameters mapped to their keys. you obtain something like the $_GET/$_POST stuff is rendered.
the whole thing:
<?php
$url = "index.php?option=com_virtuemart&Itemid=210&category_id=12&lang=is&limit=20&limitstart=180&page=shop.browse";
$url = parse_url($url);
parse_str($url['query'], $output);
if($output['page'] == "shop.browse")
{
//stmts
}
else
{
//stmts
}
I have a string, "Chicago-Illinos1" and I want to add one to the end of it, so it would be "Chicago-Illinos2".
Note: it could also be Chicago-Illinos10 and I want it to go to Chicago-Illinos11 so I can't do substr.
Any suggested solutions?
Complex solutions for a really simple problem...
$str = 'Chicago-Illinos1';
echo $str++; //Chicago-Illinos2
If the string ends with a number, it will increment the number (eg: 'abc123'++ = 'abc124').
If the string ends with a letter, the letter will be incremeted (eg: '123abc'++ = '123abd')
Try this
preg_match("/(.*?)(\d+)$/","Chicago-Illinos1",$matches);
$newstring = $matches[1].($matches[2]+1);
(can't try it now but it should work)
$string = 'Chicago-Illinois1';
preg_match('/^([^\d]+)([\d]*?)$/', $string, $match);
$string = $match[1];
$number = $match[2] + 1;
$string .= $number;
Tested, works.
explode could do the job aswell
<?php
$str="Chicago-Illinos1"; //our original string
$temp=explode("Chicago-Illinos",$str); //making an array of it
$str="Chicago-Illinos".($temp[1]+1); //the text and the number+1
?>
I would use a regular expression to get the number at the end of a string (for Java it would be [0-9]+$), increase it (int number = Integer.parse(yourNumberAsString) + 1), and concatenate with Chicago-Illinos (the rest not matched by the regular expression used for finding the number).
You can use preg_match to accomplish this:
$name = 'Chicago-Illinos10';
preg_match('/(.*?)(\d+)$/', $name, $match);
$base = $match[1];
$num = $match[2]+1;
print $base.$num;
The following will output:
Chicago-Illinos11
However, if it's possible, I'd suggest placing another delimiting character between the text and number. For example, if you placed a pipe, you could simply do an explode and grab the second part of the array. It would be much simpler.
$name = 'Chicago-Illinos|1';
$parts = explode('|', $name);
print $parts[0].($parts[1]+1);
If string length is a concern (thus the misspelling of Illinois), you could switch to the state abbreviations. (i.e. Chicago-IL|1)
$str = 'Chicago-Illinos1';
echo ++$str;
http://php.net/manual/en/language.operators.increment.php