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The correct form of regular expression is delimiter{pattern}delimiter, f.e. /^([a-z]*)$/i or @^(?:http://)?([^/]+)@i. Every form compatible with functions checking correctness of regular expressions in PHP are allowed (example).
The reason is obvious. With delimiters you have a chance to add modifiers to the regexp. Otherwise script will automatically add / at the beginning and / at the end of the pattern.
Generally, the user determines what content and at what way he wants to test, but it must have full rights to publish the test content because it will be available for other Internet users. You should also avoid writing obscene phrases, vulgar phrases, or suggest resources incompatible with Polish law. You are fully responsible for the content posted by you on the site. On the reasoned request of a third party individual entries can be removed from the site.
A regular expression is a pattern that describes a set of strings.
There are a lot of examples on the internet. You should especially check this:
Please submit every found bug by typing comment here (polish and english).
Yes. On ID column of every tested expression you can find hiperlink. Copy it and share, that's all.
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| ID | Regular expression | Subject | Result | Matches | Link |
|---|---|---|---|---|---|
| 518770 | [0-9]{18}$\b | 123456789012345678 | true |
|
Link |
| 518769 | [0-9]{18}$\b | 12345678901234567 | false | Link | |
| 518768 | \b[0-9]{18}$\b | 12345678901234567 | false | Link | |
| 518767 | \b[0-9]{18}$\b | 123456789012345678 | true |
|
Link |
| 518766 | \b^[0-9]{18}$\b | 123456789012345678 | true |
|
Link |
| 518765 | /[A-Za-z][A-Za-z0-9]+(@[a-z]{1,7}\.(pl|com))$/ | [email protected] | false | Link | |
| 518764 | /[A-Za-z][A-Za-z0-9]+(@[a-z]{1,7}\.(pl|com))$/ | [email protected]@gmail.com | true |
|
Link |
| 518763 | /[A-Za-z][A-Za-z0-9]+(@[a-z]{1,7}\.(pl|com))$/ | [email protected] | false | Link | |
| 518762 | /[A-Za-z][A-Za-z0-9]+(@[a-z]{1,7}\.(pl|com))$/ | [email protected] | true |
|
Link |
| 518761 | FM_ALARM.*_DHUB_STD | FM_ALARMCURR_DHUB_STD FM_ALARMHIST_DHUB_STD |
true |
|
Link |
| 518760 | FM_ALARM.* | FM_ALARMCURR_DHUB_STD FM_ALARMHIST_DHUB_STD |
true |
|
Link |
| 518759 | FM_ALARMCURR_DHUB_STD|FM_ALARMHIST_DHUB_STD | FM_ALARMCURR_DHUB_STD FM_ALARMHIST_DHUB_STD |
true |
|
Link |
| 518758 | (https?://)(www.)?([^/]+) | <img src="http://localhost/bmw/pracabmw23/artefakta-newsletter/?aphoto=1&asubscribe=10&artefakta" style="width:0; height:0;">HELOO <p><a href="http://localhost/bmw/pracabmw23/artefakta-newsletter/?aclick=7153&asubscribe=10&artefakta">Czytaj więcej</a></p> <p>Teraz mamy 2 tablice jedna z linkami druga z linkami do obrazków</p> <p><a href="https://www.praca-dealerbmw.pl/rekrutacje/diagnosta-bmw-bonkowscy-gorzow-wlkp/">LINK 1</a></p> <p>Teraz mamy 2 tablice jedna z linkami druga z linkami do obrazków</p> <p><a href="https://www.praca-dealerbmw.pl/rekrutacje/diagnosta-bmw-bonkowscy-gorzow-wlkp-2/">LINK 2</a></p> <p>Teraz mamy 2 tablice jedna z linkami druga z linkami do obrazków</p> <p><a href="https://www.praca-dealerbmw.pl/rekrutacje/diagnosta-bmw-bonkowscy-gorzow-wlkp-4/">LINK 4</a></p> |
false | Link | |
| 518757 | <ips | lorem ipsum | false | Link | |
| 518756 | ^Lorem | Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum. |
true |
|
Link |
| 518755 | /[A-Z]{2,}|[0-9]{1,}( )/ | 1 B O W 24 B W K | true |
|
Link |
| 518754 | /[A-Z]{2,}|[0-9]{1,}( )/ | 1 B O W | true |
|
Link |
| 518753 | /[A-Z]{2,}|[0-9]{1,}( )/ | false | Link | ||
| 518752 | /[A-Z]{2,}|[0-9]{1,}( )/ | BIUR AAA AS | true |
|
Link |
| 518751 | /[A-Z]{2,}|[0-9]{1,}( )/ | 1 BRY | true |
|
Link |
| 518750 | /[A-Z]{2,}|[0-9]{1,}( )/ | 1 | false | Link | |
| 518749 | /([A-Z]{2,}|[0-9]{1,})( )/ | 1 | false | Link | |
| 518748 | /^([A-Z]{2,}|[0-9]{1,})( )$/ | 1 | false | Link | |
| 518747 | /^([A-Z]{2,}|[0-9]{1,})( )$/ | 1 | true |
|
Link |
| 518746 | /^[A-Z]{2,}|[0-9]{1,}|( )$/ | AAA AA | false | Link |