The PHP array_udiff function computes the difference of arrays using a callback function for data comparison. It's useful for custom comparisons. Basic DefinitionThe array_udiff function compares array values u
The PHParray_udiff_assocfunction computes the difference of arrays with additional index check. It compares data using a callback function. Basic Definition array_udiff_assoccompares array values with a callback while checking keys. It returns values from array1 not present in any other arrays. S...
The PHParray_diff()function is used to get the difference between an array with one or more arrays. This function has the following syntax: array_diff(array$array,array...$arrays):array The function parameters are as follows: The$arrayto compare with the other parameters The$arraysto compare...
The following example shows thearray_diff()function in action. Example Run this code» <?php// Sample arrays$array1=array("apple","ball","cat","dog","elephant");$array2=array("alligator","dog","elephant","lion","cat");// Computing the difference$result=array_diff($array1,$array...
php array_diff()该实现一次只处理两个数组，但我不认为这真的有问题。如果您需要一次比较3个或更多...
PHP array_diff_assoc 1 The direction of the arguments does actually make a difference: 2 3 <? 4 $a = array( 5 'x' => 'x', 6 'y' => 'y', 7 'z' => 'z', 8 't' => 't', 9 ); 10 11 $b = array( 12 'x' => 'x',...
Computes the difference of all the arrays <?php /** * array_diffs a? Computes the difference of all the arrays * * @param array * * array1 - The array to compare from and against * array2 - The array to compare from and against * array(n) - More arrays to compare from ...
<?php $array1 = array("apple", "banana", "mango"); $array2 = array("banana", "mango"); $result = array_diff($array1,$array2); print_r($result); ?> Output 2. Difference between an array against two other arrays In this example, we will take three arrays: $array1, $array2...
== $value ) {$difference[$key] = $value; } } return $difference;}?>And here an example (note index 'b' in the output):<?php$a1=array( 'a' => 0, 'b' => null, 'c' => array( 'd' => null ) );$a2=array( 'a' => 0, 'b' => null );var_dump( array_diff_assoc...
PHP 数组可以同时含有 integer 和string 类型的键名,因为 PHP 实际并不区分索引数组和关联数组。 如果对给出的值没有指定键名,则取当前最大的整数索引值,而新的键名将是该值加一。如果指定的键名已经有了值,则该值会被覆盖。 Example #3 混合 integer 和string 键名 <?php$array = array( "foo" => "bar...