PHP: How to get specific word from string

Question

This is my string:

$string="VARHELLO=helloVARWELCOME=123qwa";

I want to get 'hello' and '123qwa' from string.

My pseudo code is.

if /^VARHELLO/ exist
    get hello(or whatever comes after VARHELLO and before VARWELCOME)
if /^VARWELCOME/ exist
    get 123qwa(or whatever comes after VARWELCOME)

Note: values from 'VARHELLO' and 'VARWELCOME' are dynamic, so 'VARHELLO' could be 'H3Ll0' or VARWELCOME could be 'W3l60m3'.

Example: 
$string="VARHELLO=H3Ll0VARWELCOME=W3l60m3";

why dont you split with a separator like "VARHELLO=H3Ll0&VARWELCOME=W3l60m3" then explode into an array? — B001ᛦ
– B001ᛦ, Commented Jul 21, 2015 at 13:46
I already tried the separator '&' and used 'parse_str()', and it works but this is the given problem. — Kuha Co Akawnt Mo
– Kuha Co Akawnt Mo, Commented Jul 21, 2015 at 13:49

Jessica · Accepted Answer · 2015-07-21 13:48:18Z

4

Here is some code that will parse this string out for you into a more usable array.

<?php
$string="VARHELLO=helloVARWELCOME=123qwa";
$parsed = [];
$parts = explode('VAR', $string);

foreach($parts AS $part){
   if(strlen($part)){
       $subParts = explode('=', $part);
       $parsed[$subParts[0]] = $subParts[1];
   }

}

var_dump($parsed);

Output:

array(2) {
  ["HELLO"]=>
  string(5) "hello"
  ["WELCOME"]=>
  string(6) "123qwa"
}

Or, an alternative using parse_str (http://php.net/manual/en/function.parse-str.php)

<?php
$string="VARHELLO=helloVARWELCOME=123qwa";
$string = str_replace('VAR', '&', $string);

var_dump($string);
parse_str($string);

var_dump($HELLO);
var_dump($WELCOME);

Output:

string(27) "&HELLO=hello&WELCOME=123qwa"
string(5) "hello"
string(6) "123qwa"

answered Jul 21, 2015 at 13:48

Jessica

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2 Comments

Kuha Co Akawnt Mo Over a year ago

Thanks. You save my time.

Yarek T Over a year ago

I would recommend against using parse_str() as it pollutes scope, and could introduce security issues: "VAR&_GET=..."

Mubin · Accepted Answer · 2015-07-21 13:58:22Z

2

Jessica's answer is perfect, but if you want to get it using preg_match

$string="VARHELLO=helloVARWELCOME=123qwa";

preg_match('/VARHELLO=(.*?)VARWELCOME=(.*)/is', $string, $m);

var_dump($m);

your results will be $m[1] and $m[2]

array(3) {
  [0]=>
    string(31) "VARHELLO=helloVARWELCOME=123qwa"
  [1]=>
    string(5) "hello"
  [2]=>
    string(6) "123qwa"

}

answered Jul 21, 2015 at 13:58

Mubin

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