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【持续更新】App Inventor 2 中文拓展一览 - App Inventor 2 中文网 - 清泛...
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【数据库】LeanDB 数据库扩展
【数据库】MySQL + php后端数据库
【数据库】MongoDB + php后端数据库
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Service Temporarily Unavailable Magento?
...
@jQuery.PHP.Magento.com It would be in the root folder of your magento website. But it will only be there if the site is stuck in maintenance mode. Under normal operations this file won't exist.
– elMarquis
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Difference between var_dump,var_export & print_r
...2] => 42
[3] => Array ([0] => 42)
)
var_export prints valid php code. Useful if you calculated some values and want the results as a constant in another script. Note that var_export can not handle reference cycles/recursive arrays, whereas var_dump and print_r check for these. var_exp...
Possibility of duplicate Mongo ObjectId's being generated in two different collections?
...ing in Mongo itself, it is possible to have duplicate _id's generated with PHP in Mongo.
The use-case where this has happened with regularity for me is when I'm looping through a dataset and attempting to inject the data into a collection.
The array that holds the injection data must be explicitl...
Microsoft Excel mangles Diacritics in .csv files?
I am programmatically exporting data (using PHP 5.2) into a .csv test file.
Example data: Numéro 1 (note the accented e).
The data is utf-8 (no prepended BOM).
...
Grep not as a regular expression
I need to search for a PHP variable $someVar . However, Grep thinks that I am trying to run a regex and is complaining:
6 ...
How do I list all cron jobs for all users?
... d m w user command
09,39 * * * * root [ -d /var/lib/php5 ] && find /var/lib/php5/ -type f -cmin +$(/usr/lib/php5/maxlifetime) -print0 | xargs -r -0 rm
47 */8 * * * root rsync -axE --delete --ignore-errors / /mirror/ >/dev/null
17 1 * * * root ...
How to write character & in android strings.xml
...ere is a nice reference page: http://jrgraphix.net/research/unicode_blocks.php?block=0
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浅谈Heatmap：网页热点图生成原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...了一些随机生成的数据，以Imagick为例，代码如下：
<?php
$coordinates = array();
for ($i = 0; $i < 1000; $i++) {
$coordinates[] = array(rand($i, 1000), rand($i, 1000));
}
$max_repeat = max(
array_count_values(
array_map(function($v) { return "{$v[0]}x...
Why is it slower to iterate over a small string than a small list?
...IIObject *)(op))->state.kind) is (I think) an indirection and a C-level cast);
#define PyUnicode_DATA(op) \
(assert(PyUnicode_Check(op)), \
PyUnicode_IS_COMPACT(op) ? _PyUnicode_COMPACT_DATA(op) : \
_PyUnicode_NONCOMPACT_DATA(op))
(which is also boring for similar reasons, assu...