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Is there a use-case for singletons with database access in PHP?
...bsolutely sure that you'll never have more than one instance of, you eventually have a second. You may end up with a second monitor, a second database, a second server--whatever.
When this happens, if you have used a static class you're in for a much worse refactor than if you had used a singleton...
Apache Proxy: No protocol handler was valid
...
For me on WAMP, I installed the modules above via the menu and had to uncomment LoadModule slotmem_shm_module modules/mod_slotmem_shm.so in httpd.conf
– Flion
Dec 20 '17 at 19:55
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How do I use the ternary operator ( ? : ) in PHP as a shorthand for “if / else”?
...ndition is false */ ;
syntax is not a "shorthand if" operator (the ? is called the conditional operator) because you cannot execute code in the same manner as if you did:
if (condition) {
/* condition is true, do something like echo */
}
else {
/* condition is false, do something else */
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Add number of days to a date
... about taking their date calculations seriously - its easy to forgot about all of the exceptions.
– JJ Rohrer
Jul 24 '14 at 18:28
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Laravel Check If Related Model Exists
...hp 7.2+ you can't use count on the relation object, so there's no one-fits-all method for all relations. Use query method instead as @tremby provided below:
$model->relation()->exists()
generic solution working on all the relation types (pre php 7.2):
if (count($model->relation))
{
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PHP: How to remove specific element from an array?
...tiple items with the same value, you can use array_keys to get the keys to all items:
foreach (array_keys($array, 'strawberry') as $key) {
unset($array[$key]);
}
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How can I recall the argument of the previous bash command?
Is there a way in Bash to recall the argument of the previous command?
7 Answers
7
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When should I use Memcache instead of Memcached?
...o seems to require external C/C++ libraries so I'm not sure if I can install it.
4 Answers
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java.net.ConnectException: localhost/127.0.0.1:8080 - Connection refused
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e.g if your URL is like http://localhost:8080/Getdata.php or http://127.0.0.1:8080/Getdata.php then you have to change it as use http://10.0.2.2:8080/Getdata.php
– Vikas Patidar
Jan 30 '14 at 8:46
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RadioButton单选按钮扩展集合 · App Inventor 2 中文网
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RadioButton单选按钮扩展
本页面收录了多个RadioButton（单选按钮）扩展，为App Inventor应用提供了单选按钮功能。...