php array concat



php array concat

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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';

php array concat

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is called the union operator, which differs from a concatenation operator (php doesn't have one for arrays). the description clearly says: the operator appends elements of reing keys from the right handed array to the left handed, whereas duplicated keys are not overwritten. with the example: $a = array("a" 

php array concat

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definition and usage. the array_merge() function merges one or more arrays into one array. tip: you can assign one array to the function, or as many as you like. note: if two or more array elements have the same key, the last one overrides the others. note: if you assign only one array to the array_merge() function, and the 

php array concat

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how to combine and merge arrays in php using the array_combine and array_merge functions, and the array union operator.

php array concat

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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 

php array concat

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just a quick post so i know where to look the next time i forget how to concatenate arrays in php. use array_merge to concatenate two numericallyindexed arrays; not array_push and not the array union operator: . $first = array('doh', 'ray', 'me'); $second = array('fah', 'soh', 'lah', 'te', 'do'); echo "union: " 

php array concat

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the uppercase a has been renumbered from index to index , to avoid a collision, and merged onto the end. the uppercase b has overwritten the lowercase b and replaced it in the original place within the array. the operator can also merge arrays. the array on the right overwrites any identically named keys found on 

php array concat

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benchmarking php array concatenation. i recently began working on a contribution to a small programming contest (swedish), where the challenge is to optimize ones code to run as fast as possible. one of the parts in my code that caught my interest was some implode() calls. my gut feeling told me that it 

php array concat

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for hashes, the merging process occurs on the keys: if the key does not already exist, it is added but if the key already exists, its value is overridden. tip. if you want to ensure that some values are defined in an array (by given default values), reverse the two elements in the call: 

php array concat

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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.