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I am using php: $import="INSERT into book(date,amount,description) values(STR_TO_DATE('$data[1]','%e-%c-%y'),'$data[2]')"; mysql_query($import) or die(mysql_error());Navigate: Previous Message• Next Message Options: Reply• Quote ...
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Theexplode()function is a powerful tool for string manipulation in PHP. It's particularly useful when working with data that's delivered as a string, but you need to process it as individual items, such as CSV data or space-separated values. Examples How to Useexplode()in PHP for String ...
日更系列之c++的to_string的浮点数精度问题 一、背景 做了一个根据搜索词计算embedding向量的服务,但是算法同学发现新服务打分精度变低了,原来能保存到小数点后16位的,现在打分只有小数点后6位。 二、单精度双精度浮点数 看到这问题,首先怀疑的是double类型数据被强转float类型,导致精度丢失。
The LEFT function returns a string consisting of the specified number of left-most characters of the string expression, and RIGHT, well, that is kind of obvious. The fold functions are a pair of functions for converting all the lowercase characters in a given string to uppercase, UPPER(< ...
A PHP function that truncates (shortens) a given HTML5 string to a max number of characters. - jlgrall/truncateHTML
arr = ["1", "2", "3"] arr.map!(&:to_i) puts arr.inspect # 输出: [1, 2, 3] PHP 代码语言:txt 复制 $arr = ["1", "2", "3"]; $arr = array_map('intval', $arr); print_r($arr); // 输出: Array ( [0] => 1 [1] => 2 [2] => 3 ) 基础概念 类型转换:在编...
The number, as a string. 更新日志 版本说明 5.3.2 The base was extended from 2 to 36, to 2 to 62 and -2 to -36. 注释 Note: To use the extended base introduced in PHP 5.3.2, then PHP must be compiled against GMP 4.2.0 or greater. 范例...
php手册String函数(解析) $str=addcslashes("A001 A002 A003","A"); echo($str);//在大写A的前面加上反斜杠\,大小写是区分的哦 1. 2. 3. $str="Welcome to Shanghai!"; echo$str." "; echoaddcslashes($str,'A..Z')." ";//有大写的A到Z之间的英文全部前面加上反斜杠\...