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Regular expression for a hexadecimal number?
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If you're using Perl or PHP, you can replace
[0-9a-fA-F]
with:
[[:xdigit:]]
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What is the coolest thing you can do in
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PHP - the Sierpinski gasket a.k.a the Triforce
OK, it's 15 lines of code but the result is awesome! That's the kind of stuff that made me freak out when I was a child. This is from the PHP manual:
$x = 200;
$y = 200;
$gd = i...
Regular expression for letters, numbers and - _
I'm having trouble checking in PHP if a value is is any of the following combinations
6 Answers
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Example invalid utf8 string?
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In PHP:
$examples = array(
'Valid ASCII' => "a",
'Valid 2 Octet Sequence' => "\xc3\xb1",
'Invalid 2 Octet Sequence' => "\xc3\x28",
'Invalid Sequence Identifier' => "\xa0\xa1",
'Valid 3 Octet Sequ...
Difference between VARCHAR and TEXT in MySQL [duplicate]
...up to 16 MB, LONGTEXT up to 4 GB. If you use LONGTEXT and get the data via PHP (at least if you use mysqli without store_result), you maybe get a memory allocation error, because PHP tries to allocate 4 GB of memory to be sure the whole string can be buffered. This maybe also happens in other langua...
How to customise file type to syntax associations in Sublime Text?
...llows you to enable syntax for composite extensions (e.g. sql.mustache, js.php, etc ... )
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How to deploy correctly when using Composer's develop / production switch?
...d hosting, you might not be able to get to a command line
even if you did, PHP might be restricted there in terms of commands, memory or network access
repository CLI tools (Git, Svn) are likely to not be installed, which would fail if your lock file has recorded a dependency to checkout a certain c...
How to ignore files which are in repository?
I have a file (config.php), that is already commited to Git repository, but I want to ignore locally, i.e. I want that file to remain in repository, but force Git to ignore any changes to it.
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Select last row in MySQL
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Make it simply use: PDO::lastInsertId
http://php.net/manual/en/pdo.lastinsertid.php
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typecast string to integer - Postgres
...ing into an integer.
Solution
Create a user-defined function inspired by PHP's intval() function.
CREATE FUNCTION intval(character varying) RETURNS integer AS $$
SELECT
CASE
WHEN length(btrim(regexp_replace($1, '[^0-9]', '','g')))>0 THEN btrim(regexp_replace($1, '[^0-9]', '','g'))::intege...