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sed in-place flag that works both on Mac (BSD) and Linux
Is there an invocation of sed todo in-place editing without backups that works both on Linux and Mac? While the BSD sed shipped with OS X seems to need sed -i '' … , the GNU sed Linux distributions usually come with interprets the quotes as empty input file name (instead of the backup exten...
How to encrypt/decrypt data in php?
I'm currently a student and I'm studying PHP, I'm trying to make a simple encrypt/decrypt of data in PHP. I made some online research and some of them were quite confusing(at least for me).
...
PHP DOMDocument loadHTML not encoding UTF-8 correctly
...loadHTML('<?xml encoding="utf-8" ?>' . $content); fixed it for me in PHP7 (so it is still an issue) - this is a really annoying problem, because I defined utf8 in the HTML document (with <meta charset="UTF-8" />) but that has no effect, it seems to need the <?xml part, which is totall...
Unix command to find lines common in two files
...sion 3.2.51(1)-release
Copyright (C) 2007 Free Software Foundation, Inc.
$ cat > abc
123
567
132
$ cat > def
132
777
321
So the files abc and def have one line in common, the one with "132".
Using comm on unsorted files:
$ comm abc def
123
132
567
132
777
321
$ comm -12 abc def ...
What's the difference between a catalog and a schema in a relational database?
...
From the relational point of view :
The catalog is the place where--among other things--all of the various schemas (external, conceptual, internal) and all of the corresponding mappings (external/conceptual, conceptual/internal) are kept.
In other words, the ...
How do I make a Git commit in the past?
...se git add, but you would first need to copy the file from some external location to the expected path (--index-filter runs its command in a temporary GIT_WORK_TREE that is empty).
If you want your new file to be added to every existing commit, then you can do this:
new_file=$(git hash-object -w p...
Check if $_POST exists
...ugustus Francis's answer, empty() is not correct for choice #1, because in php, the string '0' is equivalent to false - and empty() returns true for all values equivalent to false. So using empty, the code would skip printing if the value was '0'. If you want to exclude the empty string, see Augustu...
PHP array delete by value (not key)
I have a PHP array as follows:
18 Answers
18
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Chrome says “Resource interpreted as script but transferred with MIME type text/plain.”, what gives?
...fficiently configured, misconfigured, or a server-side application (e. g., PHP) is generating the client-side script resource.
Proper MIME media types for ECMAScript implementations like JavaScript include:
text/javascript (registered as obsolete, not deprecated; but still valid, and supported be...
How to display HTML tags as plain text [duplicate]
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If the question's text were to be generated by PHP, htmlspecialchars() does what this answer suggests: replace the less-than and greater-than signs (and others) with their HTML entities. But the question does not specify, so this more general answer is a superset of all t...