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PHP: How to remove all non printable characters in a string?

...the other answers here do not take into account unicode characters (e.g. öäüßйȝîûηыეமிᚉ⠛ ). In this case you can use the following: $string = preg_replace('/[\x00-\x08\x0B\x0C\x0E-\x1F\x7F-\x9F]/u', '', $string); There's a strange class of characters in the range \x80-\x9F (J...
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What are the differences between Rust's `String` and `str`?

...r fewer bytes than there were before (e.g. replacing an a (1 byte) with an ä (2+ bytes) would require making more room in the str). There are specific methods that can modify a &mut str in place, mostly those that handle only ASCII characters, like make_ascii_uppercase. 2 Dynamically sized type...
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Converting between strings and ArrayBuffers

Is there a commonly accepted technique for efficiently converting JavaScript strings to ArrayBuffers and vice-versa? Specifically, I'd like to be able to write the contents of an ArrayBuffer to localStorage and to read it back. ...
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How to log PostgreSQL queries?

...ian and Ubuntu GNU/Linux, this file usually resides at /etc/postgresql/$v/main/postgresql.conf, where $v is the server version. Also, on the aforementioned systems, when log_destination = 'stderr', the output is written to /var/log/postgresql/postgresql-$v-main.log, where $v is the server version (n...
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How to allow to accept only image files?

... anything at all, so be sure to test your target platforms well. For detailed browser support, see http://caniuse.com/#feat=input-file-accept share | improve this answer | ...
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HTML5 Email Validation

It is said "With HTML5, we need no more js or a server side code to check if the user's input is a valid email or url address" ...
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How to set HTTP header to UTF-8 using PHP which is valid in W3C validator?

...her part of the content type separately (for example, you have some text/plain pages, and some text/html pages, but they are all UTF8.) Is my understanding correct? – Eric Seastrand Jan 29 '15 at 15:55 ...
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Open a new tab in gnome-terminal using command line [closed]

... You can also have each tab run a set command. gnome-terminal --tab -e "tail -f somefile" --tab -e "some_other_command" share | improve this answer | follow ...
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Difference between Role and GrantedAuthority in Spring Security

...ind and replace" and i am back on track! – Jørgen Skår Fischer Jan 29 '16 at 23:20 12 This is a...
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Convert a binary NodeJS Buffer to JavaScript ArrayBuffer

... Dec 18 '17 at 15:14 Linus Unnebäck 14k99 gold badges5959 silver badges7575 bronze badges answered Jun 12 '13 at 11:20 ...