Php Order Array

An array is a collection of data that organizes a series of data to form an operational whole. Each entity in the array contains two keys and values. First, what is the array Array is a collection of data, a series of data organized together to form an operational whole. Each entity in the array contains two keys and values. Second, the statement data There are two main ways to declare an array in PHP: First, the array () function declaration array, one is directly assigned to the array element. Fei Fei Asp! Technology Paradise <1> array () function ...

Array definition and initialization What is an array? An array is a programming structure that is a variable that holds a set of values ​​or a series of values. For example, at the time of the census, personal identity registration, such as name, gender, nationality, birth, etc. can be used as an array. The array created in the php tutorial is defined using the array () structure, such as $ people = array ('name', 'sex', 'nation', 'brith'); and how to display the value of each element in the array Is to use the index from 0, the index number ...

Array_multisort (PHP4 >= 4.0b4) array_multisort---&http://www.aliyun.com/zixun/aggregation/37954.html "> nbsp; Array syntax for sorting composite or multiple dimensions: bool Array_multisort (Array ar1 [, mixed arg [, mixed ...).

php string function is essential, give us a lot of convenience to solve practical problems, such as the use of PHP string function string segmentation, interception, matching, replacement and other treatment. PHP string function is essential for PHP entry learners, so we will mainly introduce PHP string segmentation function processing experience, open the PHP string function Getting Started tutorial tour. Commonly used PHP string segmentation function Commonly used PHP segmentation string functions are explode, strtok, str_split, mainly for demolition ...

Array_reverse (PHP4 >= 4.0b4) array_reverse---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Returns the array syntax for reversing the order of elements: array array_reverse (array array); Description: This function reverses the element order of the parameter array, and ...

Arsort (PHP3, PHP4) Arsort the relational syntax for---reverse the order of the array and maintain index values: void&http://www.aliyun.com/zixun/aggregation/37954.html "> nbsp; Arsort (array array); Description: This function reverses the order of the array elements (z) and maintains the relationship of the array element to its index value ...

It would be faster to enclose the string in single quotes instead of double quotes. Because PHP searches for variables in double-quoted strings, single quotes do not. Note that only echo can do this: it's a "function" that takes multiple strings as arguments, Echo is a language structure, not a real function, so the function with double quotes). 1, if you can define the class method as static, as far as the definition of static, it will speed up nearly 4 times. 2, $ row ['id'] speed ...

PHP invoke Linux Command details/* The function to invoke Linux commands in the PHP tutorial is string exec (String command, string [array], int [return_var]); such as exec ("VPOPMA ...")

Krsort (PHP3 >=3.0.13, PHP4 >= 4.0b4) krsort---&http://www.aliyun.com/zixun/aggregation/37954.html "> nbsp; Arranges the array syntax according to the inverted order of index values: int krsort (array array); Description: Z The array in reverse order of index values ...

Sort (PHP3, PHP4) sort---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Resets the value of an array from a-Z syntax: void sort (array array [, int sort_flags]); Description: This function arranges the elements of an array by a-Z. Example: <?...