php merge arrays



an addition to what julian egelstaff above wrote the array union operation () is not doing an array_unique it will just not use the keys that are already defined in the left array. the difference between union and merge can be seen in an example like this: <?php $arr['one'] = 'one'; $arr['two'] = 'two'; $arr['zero'] = 'zero'; well organized and easy to understand web building tutorials with lots of examples of how to use html, css, javascript, sql, php, and xml. merge two arrays into one array: tip: the difference between this function and the array_merge_recursive() function is when two or more array elements have the same key. both will have a key of , and that method of combining the arrays will collapse duplicates. try using array_merge() instead. $arr = array('foo'); same as array( => 'foo') $arr = array('bar'); same as array( => 'bar') will contain array('foo', 'bar'); $combined = array_merge($arr, $arr);. if the elements in your array 

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just use: $output = array_merge($array, $array);. that should solve it. because you use string keys if one key occurs more than one time (like '' in your example) one key will overwrite proceding ones with the same name. because in your case they both have the same value anyway it doesn't matter  how to combine and merge arrays in php using the array_combine and array_merge functions, and the array union operator. the array_merge() is a builtin function in php and is used to merge two or more arrays into a single array. this function is used to merge the elements or values of two or more arrays together into a single array. the merging occurs in such a manner that the values of one array are appended at the end of the previous array.

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i've been working at a new job and the interesting thing when working with other people's code is you often learn a heap of stuff you didn't already know. a couple of weeks ago i came across a way to merge arrays in php with the operator, instead of using the array functions (e.g. array_merge) so share  when merging two multi dimensional arrays in php, array_merge_recursive() is the way to go. but is has one flaw: this means: if the array key already exists, the value will be changed to an array… answer: use the php array_merge() function. you can use the php array_merge() function to merge the elements or values of two or more arrays together into a single array. the merging is occurring in such a way that the values of one array are appended to the end of the previous array. <?php. recursively merge arrays, overwriting nonarray values. . param array $first first array. param array $second second array. function array_merge_recursive_overwrite() {. get all of our arguments. $args = func_get_args();. make sure we have arguments to work with. if (count($args) < ) return;.

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