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phpcms v9内容页/下载页更新时间（updatetime）为空的解决方法 - 更多技术 ...
phpcms v9内容页/下载页更新时间（updatetime）为空的解决方法这是由于模型管理中字段的设置不正确导致。updatetime原本应该设置为int（10）类型，可能由于什么原因被设置成了datetime类型（可以查看数...这是由于模型管理中字段的...
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 */
...
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...
Characters allowed in a URL
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The characters allowed in a URI are either reserved or unreserved (or a percent character as part of a percent-encoding)
http://en.wikipedia.org/wiki/Percent-encoding#Types_of_URI_characters
says these are RFC 3986 unreserved characters ...
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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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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Apache Proxy: No protocol handler was valid
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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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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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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]);
}
share
|
improve this answer
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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))
{
...