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Eloquent Collection: Counting and Detect Empty
...h may result in unwanted error.
Note that this method exists from version 5.3 onwards.
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VIP会员中心 · App Inventor 2 中文网，少儿编程陪伴者
... 电教馆的网站AI伴侣2.2x版本，平台版本过旧，很多aix拓展无法运行，文档也是过旧的英文原版，参考意义不大。 中文网于 2023/12/02 同步过一次MIT最新代码（参考发布日志）...
PHP 5.4 Call-time pass-by-reference - Easy fix available?
... actual call. Since PHP started showing the deprecation errors in version 5.3, I would say it would be a good idea to rewrite the code.
From the documentation:
There is no reference sign on a function call - only on function definitions. Function definitions alone are enough to correctly pass...
Include constant in string without concatenating
...ions too
You can also use anonymous functions provided you're running PHP 5.3+.
$escape = function ( $string ) {
return htmlspecialchars( (string) $string, ENT_QUOTES, 'utf-8' );
};
$userText = "<script>alert('xss')</script>";
echo( "You entered {$escape( $userText )}" );
Produ...
App Inventor 2 向心力实验App - 探究向心力F与角速度ω、半径r、质量m的关...
...sp; 结束对于
返回 总和 / 长度(数据列表)
5.3 图表数据添加
当 按钮_记录数据.被点击 时
// 添加到F-ω图表
调用 图表_F_omega.添加数据点("实测值", 全局变量 当前角速度Z, 全局变量 向心...
Good PHP ORM Library?
...e only problem I can think of with Doctrine2 is that it's dependent on PHP 5.3 and up.
– jblue
Sep 20 '10 at 10:16
8
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Most efficient way to determine if a Lua table is empty (contains no entries)?
... @Moberg the less dumbed down version, in the context of lua 5.2 & 5.3, is that non locals are either upvals or _ENV lookups. An upval has to go through an extra layer of indirection, whereas an _ENV lookup is a table lookup. Whereas a local is a register in the VM
– De...
How do I grep recursively?
...only works on newer greps. It doesn't work on the grep that comes with AIX 5.3 for example.
– Withheld
Feb 1 '13 at 13:09
112
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Composer killed while updating
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Composer is apparently know to run slower in older versions of PHP (e.g. 5.3x). It was still slow in 5.5.9 for me...
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Coalesce function for PHP?
...
There is a new operator in php 5.3 which does this: ?:
// A
echo 'A' ?: 'B';
// B
echo '' ?: 'B';
// B
echo false ?: 'B';
// B
echo null ?: 'B';
Source: http://www.php.net/ChangeLog-5.php#5.3.0
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