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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...
Python read-only property
... answered Sep 27 '16 at 4:31
Oz123Oz123
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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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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...
What's the fastest way to merge/join data.frames in R?
...bases as well.
library(plyr)
library(data.table)
library(sqldf)
set.seed(123)
N <- 1e5
d1 <- data.frame(x=sample(N,N), y1=rnorm(N))
d2 <- data.frame(x=sample(N,N), y2=rnorm(N))
g1 <- sample(1:1000, N, replace = TRUE)
g2<- sample(1:1000, N, replace = TRUE)
d <- data.frame(d1, g1,...
Android存储系统基础知识：内部存储，外部存储，App特定目录 ASD(app speci...
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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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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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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...