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Which characters are valid in CSS class names/selectors?
What characters/symbols are allowed within the CSS class selectors?
I know that the following characters are invalid , but what characters are valid ?
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PHP - concatenate or directly insert variables in string
I am wondering, What is the proper way for inserting PHP variables into a string?
This way:
14 Answers
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php Replacing multiple spaces with a single space [duplicate]
...e: preg_replace('/(?:\s\s+|\n|\t)/', ' ', $x) will be more efficient especially on text with several single spaces ?
– codaddict
Mar 3 '10 at 4:23
27
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How to preview git-pull without doing fetch?
...EAD...origin/master (three dots not two) to show a single diff.
There normally isn't any need to undo a fetch, because doing a fetch only updates the remote branches and none of your branches. If you're not prepared to do a pull and merge in all the remote commits, you can use git cherry-pick to ac...
那些曾被追捧的90后创业男神女神，还好吗？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...果不言而喻，足足的曝光率使得安妮的团队赚尽了眼球，问题来了，接下来该如何走?如何不让流量流失?如何吸引更多的人进来?
这样的营销案例只能使用一次，保鲜期很短，长期高质量的内容输出很难做到，其实UGC是可以考虑...
创业公司倒闭大潮 教你正确烧钱速度？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...：月净现金消耗量只有10万，却希望融600-800万。我第一个问题就会问：
“老兄，请问如果你每月只烧10万，到底为什么你要融这么多钱？”
不管他们背地里在想什么，我最后听到的答案通常是：因为我办得到。
但“我办得到...
How to get the first item from an associative PHP array?
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More information on the reset function: www.w3schools.com/php/func_array_reset.asp
– Paul Chris Jones
Dec 17 '19 at 12:38
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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...
How to detect duplicate values in PHP array?
I am working with a one dimensional array in PHP. I would like to detect the presence of duplicate values, then count the number of duplicate values and out put the results. For example, given the following array:
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How do I add 24 hours to a unix timestamp in php?
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You probably want to add one day rather than 24 hours. Not all days have 24 hours due to (among other circumstances) daylight saving time:
strtotime('+1 day', $timestamp);
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