CODEWITHSUNDEEP
phpregex
StealthTrails
StealthTrails

Reputation: 2415

stop matching string in regex after my pattern

I am trying to match a string pattern and my regex is 

/^[a-zA-Z0-9]*(-|\s)*Iphone 7(\s|-)?(\p{N}GB)?\B/i

And the string with which I am trying to match is Apple Iphone 7 Plus 16 Gb. I want to match the exact regex i.e. Iphone 7 should only match with following

Please let me know what I am doing wrong? Here is regex link

Upvotes: 0

Views: 94

Answers (3)

Toto
Toto

Reputation: 91385

Not sure to well unsderstand your need, but how about:

/^.*?iphone 7(?:\s+(?:plus\s+)?\d+\s?gb.*)?$/i

Explanation:

/               : regex delimiter
  ^             : begining of string
    .*?         : 0 or more any characters not greedy
    iphone 7    : literally
    (?:         : start non capture group
      \s+       : 1 or more spaces
      (?:       : start non capture group
        plus    : literally
        \s+     : 1 or more spaces
      )?        : end group^, optional
      \d+       : 1 or more digits
      \s?       : 1 optional space
      gb        : literally
      .*        : 0 or more any character
    )?          : end group, optional
  $             : end of string
/i              : regex delimiter, case insensitive

In action:

$tests = array(
'any digits or string apple iphone 7',
'any digits or string apple iphone 7 16 gb',
'any digits or string apple iphone 7 32GB - Silver',
'any digits or string apple iphone 7 plus',
'any digits or string apple iphone 7s',
);
foreach ($tests as $test) {
    echo "$test\t ==> ";
    if (preg_match('/^.*?iphone 7(?:\s+(?:plus\s+)?\d+\s?gb.*)?$/i', $test)) {
        echo "match\n";
    } else {
        echo "doesn't match\n";
    }
}

Output:

any digits or string apple iphone 7  ==> match
any digits or string apple iphone 7 16 gb    ==> match
any digits or string apple iphone 7 32GB - Silver    ==> match
any digits or string apple iphone 7 plus     ==> doesn't match
any digits or string apple iphone 7s     ==> doesn't match

Upvotes: 1

rkmax
rkmax

Reputation: 18135

With this regex you can match and also if you want can extract some info about it

(?!apple iphone .* plus)(?:apple iphone 7)(?>\s(?<storage>\d+)?\s?(?:gb))?

You can see the demo

I have updated a bit, now will match with the following

  • [any digits or string] apple iphone 7
  • [any digits or string] apple iphone 7 16 gb
  • [any digits or string] apple iphone 7 32GB
  • [any digits or string] apple iphone 7 [any digits or string]
  • [any digits or string] apple iphone 7 16 gb [any digits or string]
  • [any digits or string] apple iphone 7 32GB [any digits or string]

Will not match with the following

  • [any digits or string] apple iphone 7 plus
  • [any digits or string] apple iphone 7 plus [any digits or string]
  • [any digits or string] apple iphone 7 16 gb plus
  • [any digits or string] apple iphone 7 16 gb plus [any digits or string]
  • [any digits or string] apple iphone 7 32GB plus [any digits or string]

Upvotes: 0

KIKO Software
KIKO Software

Reputation: 16688

If you are really only interested in the Apple Iphone 7 bit of the string, and you're using PHP, why not simply do:

if (stripos($string,'Apple Iphone 7 Plus') !== FALSE) echo 'Wow a 7 Plus!';
else if (stripos($string,'Apple Iphone 7') !== FALSE) echo 'It is only a 7';

In other words: Avoid using complex regular expressions when you can, and only use them when they are needed.

Upvotes: 0

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