Detailed explanation of 10 ways to print arrays

Suppose there is an array: What will the above code output? You can try the above results locally. We generally use print_r to print arrays (of course you can also use var_dump, but the structure is not clear) bool print_r (mixed $expression [, bool $return]) Please try to print print_r($names); when the second parameter is true , print_r will not print the array directly, but will return the printed content as a string echo print_r($names, true); we can use echo to print a string, integer, floating point type, but we cannot use it to

1.PHP output array-detailed explanation of printing array example

Introduction: Outputting array elements in PHP can be achieved through output statements, such as echo statements, print statements, etc. However, this output method can only output a certain element in the array, while the array structure can be output through the print_r() function.

2.Java Example - Adding Elements to Array

## Introduction: The following example demonstrates how to use the sort() method to sort a Java array, and how to use the insertElement () method to insert elements into the array. Here we define the printArray() method to print the array:

3.Java Example - Array Sorting and Element Search

# #Introduction: The following example demonstrates how to use the sort() method to sort a Java array, and how to use the binarySearch() method to find elements in the array. Here we define the printArray() method to print the array:

4.

php method to restore the data processed by print_r to the original array

Introduction: The PHP print_r method can print and display variables to make them easy to understand. If the variable is a string, integer or float, the variable value itself will be printed. If the variable is an array, the keys and elements will be displayed in a certain format. object is similar to an array. print_r is used to print large arrays.

5.

php Commonly Used Array Function Query Manual Array in PHP PHP Print Array PHP Statement Number

Introduction: Array function, php: PHP common array function query manual: PHP array common function array_map (callable callback,arrayarr1 [, array $…]) returns an array that contains all units in arr1 after callback has been used. The number of arguments accepted by callback should be consistent with the number of arrays passed to the array_map() function. /*Example 1*/

6.

PHP pathinfo Obtains the path, name and other information of the file Description

Introduction:: PHP pathinfo Obtain the path, name and other information of the file. Instructions: Suppose there is an image file now, and its server-side path is: $path = "/www/mywebsite/images/myphoto.jpg"; 1.pathinfo() function pathinfo() function What is returned is an array containing file information. There are four elements in the array, namely dirname, basename, extension, and filename. Code to print the array: Copy the code as follows: $fileArr = pathinfo($

7.

Achieving common prosperity is the implementation code for displaying arrays and objects in PHP

Introduction: Achieving common prosperity is: Achieving common prosperity is the implementation code for displaying arrays and objects in php: 1. Use print_r ($array/$var) print means printing, and r is taken from Array word, then the function of this function is to print the contents of the array. It can print either the contents of the array or ordinary variables. print_r ($_REQUEST) ; print_r ($_GET) ; /* Print the form content passed using the GET method*/ print_r($_POST) ; /* Print the array content passed using the form POST method

8.Ma Weidu said that jade collection is a common function collection in the PHP development process

Introduction: Ma Weidu said that jade collection is in the PHP development process Collection of commonly used functions: 1. Print array function copy code. The code is as follows: function _print($array) { echo ("

"); print_r($array); echo ("

"); } 2 .Intercept the string and copy the code. The code is as follows: func_chgtitle function func_chgtitle($str,$len) { if(strlen($str)>$len)

9.PHP A simple example code for recursively printing all elements in an array

Introduction: A simple example code for PHP to recursively print all elements in an array

10.Collection of commonly used functions in the PHP development process_PHP tutorial

Introduction: Collection of commonly used functions in the PHP development process. 1. The copy code for printing the array function is as follows: function _print($array) { echo ("pre"); print_r($array); echo ("/pre"); } 2. The copy code for intercepting the string is as follows: func_chgtitle fun

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