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Get the first N elements of an array?
...
Use array_slice()
This is an example from the PHP manual: array_slice
$input = array("a", "b", "c", "d", "e");
$output = array_slice($input, 0, 3); // returns "a", "b", and "c"
There is only a small issue
If the array indices are meaningful to you, remember that ar...
What is the effect of encoding an image in base64?
...Calculation: (48 / 6) * 8 = 64
Simple CLI calculator on Linux systems:
$ cat /dev/urandom|head -c 48000|base64|wc -c
64843
Or using an image:
$ cat my.png|base64|wc -c
Base64-images and websites
This question is much more difficult to answer. Generally speaking, as larger the image as less s...
How to invoke a Linux shell command from Java
...shell
try
Process p = Runtime.getRuntime().exec(new String[]{"csh","-c","cat /home/narek/pk.txt"});
instead.
EDIT::
I don't have csh on my system so I used bash instead. The following worked for me
Process p = Runtime.getRuntime().exec(new String[]{"bash","-c","ls /home/XXX"});
...
Nginx缓存解决方案：SRCache - 更多技术 - 清泛网 - 专注C/C++及内核技术
Nginx缓存解决方案：SRCache前些天帮别人优化PHP程序，搞得灰头土脸，最后黔驴技穷开启了FastCGI Cache，算是勉强应付过去了吧。不过FastCGI Cache不支持分布式缓存...前些天帮别人优化PHP程序，搞得灰头土脸，最后黔驴技穷开启了Fast...
Downloading a large file using curl
...
<?php
set_time_limit(0);
//This is the file where we save the information
$fp = fopen (dirname(__FILE__) . '/localfile.tmp', 'w+');
//Here is the file we are downloading, replace spaces with %20
$ch = curl_init(str_replace("...
Hashing a string with Sha256
...ich you want to do. (Presumably you want to do whichever one your friend's PHP code is doing.)
For ASCII text, Encoding.UTF8 will definitely be suitable. If you're aiming for perfect compatibility with your friend's code, even on non-ASCII inputs, you'd better try a few test cases with non-ASCII ch...
How do I access this object property with an illegal name?
I'm using a PHP class someone wrote to interface with the BaseCamp API.
2 Answers
2
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Fastest hash for non-cryptographic uses?
...
CRC32 is pretty fast and there's a function for it: http://www.php.net/manual/en/function.crc32.php
But you should be aware that CRC32 will have more collisions than MD5 or even SHA-1 hashes, simply because of the reduced length (32 bits compared to 128 bits respectively 160 bits). But ...
vim “modifiable” is off
...ot something like this:
~=+www-halo=+test=+lib=+Halo=+Return2=+HeaderTest.php=
~=+www-halo=+test=+lib=+Halo=+Service=+LandmarkTest.php=
~=+www-halo=+test=+lib=+Halo=+Transaction=+AuthnetTest.php=
Which is totally useless to you since you have a different file structure. but look for the file tha...
Adding a directory to the PATH environment variable in Windows
I am trying to add C:\xampp\php to my system PATH environment variable in Windows.
17 Answers
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