Reverse order of PHP array In an article "How to Sort PHP Array", we introduced sort, asort and ksort. They all sort the array in ascending order. So what if you want to implement the reverse order of the array? Here is another set of functions we are going to talk about: rsort, arsort, krsort. Below we will introduce this set of functions one by one! rsortrsort — Sort a numeric array in descending order. The rsort() function sorts the elements of an array in reverse order by key value. Basically the same function as arsort(). The syntax format is as follows: bool rsort (array &$array [, int $sort_flags = SORT_REGULAR ]) Let’s take an example to explain the rsort function in detail. The specific code is as follows:
1. 10 recommended articles about the php rsort() function
##Introduction: Reverse order of PHP arrays In an article "How to Sort PHP Arrays" we introduced sort, asort and ksort, which all sort arrays in ascending order. , so what if you want to implement the reverse order of the array? Here is another set of functions we are going to talk about: rsort, arsort, krsort. Below we will introduce this set of functions one by one! rsortrsort - Sort the numeric array in descending order. Sort the elements of the array in reverse order by key value. The function of arsort()...
2. 10 recommended articles about the php natsort() function
Introduction: This article has compiled 10 articles about the php natsort() function, please refer to it
3. 10 recommended articles about the php ksort() function
##4.
Recommended 10 articles about php krsort() function Introduction: Reverse order of PHP arrays In an article "How to Sort PHP Arrays" we introduced sort, asort and ksort, they all sort the array in ascending order, so what if you want to implement the reverse order of the array? Here is another set of functions we want to talk about: rsort, arsort, krsort. We will introduce this set of functions one by one! ;—Sort the numeric array in descending order. The rsort() function sorts the elements of the array in reverse order by key value. The function of arsort()...
#5. Recommended 10 articles about the php asort() function
##Introduction: Reverse order of PHP arrays in one article In the article "How to Sort PHP Arrays" we introduced sort, asort and ksort. They all sort arrays in ascending order. So what if you want to implement the reverse order of the array? Here is another set of functions we are going to talk about: rsort, arsort, krsort. Below we will introduce this set of functions one by one! rsortrsort —Sorts a numeric array in descending order. The rsort() function sorts the elements of an array in reverse order by key value. With the function of arsort()...
6. Recommended 10 articles about the php arsort() function
Introduction: Reverse order of PHP arrays In an article "How to Sort PHP Arrays" we introduced sort, asort and ksort. They all sort arrays in ascending order. So if you want to implement What about the reverse order of the array? Here is another set of functions we are going to talk about: rsort, arsort, krsort. Below we will introduce this set of functions one by one! rsortrsort —Sorts a numeric array in descending order. The rsort() function sorts the elements of an array in reverse order by key value. With the function of arsort()...
7. 10 recommended articles about array_multisort function
Introduction: The array_multisort() function in PHP can be used to sort multiple arrays at once, or to sort multi-dimensional arrays according to a certain dimension or multiple dimensions. This article explains to you how to use the array_multisort function. The array_multisort() function returns a sorted array. You can enter one or more arrays. The function sorts the first array first, then the other arrays, and if two or more values are the same, it sorts the next array. Note: The string key name will be retained, but the number...
8. Detailed introduction to Sort_java
Introduction: This article mainly introduces Java data structures and algorithm examples: Selection Sort. This article directly gives the implementation code. The code contains detailed comments. Need Friends can refer to the idea of /** * selection sorting: * Find the smallest element from the column to be sorted each time, * Then put it Go to the far left of the sequence to be sorted, until all elements are sorted &nbs...
9. Detailed introduction to the sort command
Introduction: sort is a very commonly used command in Linux. It treats each line of the file as a unit and compares it with each other. Comparison principles From the first character backward, the ASCII code values are compared in sequence, and finally they are output in ascending order. There is a file test here, the content is: 8723 23423321324 21343223 234123 231234 1234654 3452341. The -t option of sort...
10. Linux Detailed explanation on the use of sort command
## Introduction: sort is a very commonly used command in Linux. Each line of the file is treated as a unit and compared with each other. The comparison principle is to compare from the first character to the back, according to the ASCII code value, and finally compare them
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php把负数转为正整数的方法:1、使用abs()函数将负数转为正数,使用intval()函数对正数取整,转为正整数,语法“intval(abs($number))”;2、利用“~”位运算符将负数取反加一,语法“~$number + 1”。

实现方法:1、使用“sleep(延迟秒数)”语句,可延迟执行函数若干秒;2、使用“time_nanosleep(延迟秒数,延迟纳秒数)”语句,可延迟执行函数若干秒和纳秒;3、使用“time_sleep_until(time()+7)”语句。

php除以100保留两位小数的方法:1、利用“/”运算符进行除法运算,语法“数值 / 100”;2、使用“number_format(除法结果, 2)”或“sprintf("%.2f",除法结果)”语句进行四舍五入的处理值,并保留两位小数。

判断方法:1、使用“strtotime("年-月-日")”语句将给定的年月日转换为时间戳格式;2、用“date("z",时间戳)+1”语句计算指定时间戳是一年的第几天。date()返回的天数是从0开始计算的,因此真实天数需要在此基础上加1。

php判断有没有小数点的方法:1、使用“strpos(数字字符串,'.')”语法,如果返回小数点在字符串中第一次出现的位置,则有小数点;2、使用“strrpos(数字字符串,'.')”语句,如果返回小数点在字符串中最后一次出现的位置,则有。

php字符串有下标。在PHP中,下标不仅可以应用于数组和对象,还可应用于字符串,利用字符串的下标和中括号“[]”可以访问指定索引位置的字符,并对该字符进行读写,语法“字符串名[下标值]”;字符串的下标值(索引值)只能是整数类型,起始值为0。

方法:1、用“str_replace(" ","其他字符",$str)”语句,可将nbsp符替换为其他字符;2、用“preg_replace("/(\s|\ \;||\xc2\xa0)/","其他字符",$str)”语句。

在php中,可以使用substr()函数来读取字符串后几个字符,只需要将该函数的第二个参数设置为负值,第三个参数省略即可;语法为“substr(字符串,-n)”,表示读取从字符串结尾处向前数第n个字符开始,直到字符串结尾的全部字符。


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