Analysis of PHP array deletion solutions using functions

PHP is one of the most commonly used programming technologies, so I have studied PHP array deletion. Here I will share it with you and hope it will be useful to you. PHP is a server-side scripting language that is easy to learn and use. With little programming knowledge, you can use PHP to build a truly interactive WEB site.

PHPLIB is the most commonly used base database to provide general transactions. -As mentioned above, the scalability of PHP has entered a period of rapid development. It may be difficult for a non-programmer to extend additional functions for PHP, but it is not difficult for a PHP programmer. -Object-Oriented Programming PHP provides classes and objects. Web-based programming requires Object-Oriented Programming capabilities. PHP supports constructors and extraction classes. -Scalability: traditional web page interactions are achieved through CGI. The CGI program is not ideal for scalability, because it opens an independent process for every running CGI program. Let's take a look at the PHP array deletion code in detail.

PHP array deletion code:

 
 

  
  
/**
  
  
* Remove blank elements from the array (including elements with only white spaces)
  
  
*
  
  
* @ Param array $ arr
  
  
* @ Param boolean $ trim
  
  
*/
  
  
Copy the Code as follows:
  
  
Function array_remove_empty (& $ arr, $Trim=True)
  
  
{
  
  
Foreach ($ arr as $Key=>$ Value ){
  
  
If (is_array ($ value )){
  
  
Array_remove_empty ($ arr [$ key]);
  
  
} Else {
  
  
$Value=Trim($ Value );
  
  
If ($Value= ''){
  
  
Unset ($ arr [$ key]);
  
  
} Elseif ($ trim ){
  
  
$ Arr [$ key] = $ value;
  
  
}
  
  
}
  
  
}
  
  
}
  
  
 
  
  
/**
  
  
* Convert a two-dimensional array to a hashmap
  
  
*
  
  
* If the $ valueField parameter is omitted, each item in the conversion result is an array containing all the data of the item.
  
  
*
  
  
* @ Param array $ arr
  
  
* @ Param string $ keyField
  
  
* @ Param string $ valueField
  
  
*
  
  
* @ Return array
  
  
*/
  
  
Copy the Code as follows:
  
  
Function array_to_hashmap (& $ arr, $ keyField, $ValueField=Null)
  
  
{
  
  
$Ret=Array();
  
  
If ($ valueField ){
  
  
Foreach ($ arr as $ row ){
  
  
$ Ret [$ row [$ keyField] = $ row [$ valueField];
  
  
}
  
  
} Else {
  
  
Foreach ($ arr as $ row ){
  
  
$ Ret [$ row [$ keyField] = $ row;
  
  
}
  
  
}
  
  
Return $ ret;
  
  
}