Array copy values to keys in PHP

Question

I have this array    a   array  b    c    d      Is there a simple method to convert the array to the following    a   array  b    gt   b    c    gt   c    d    gt   d

User · Accepted Answer

final array   array combine  a   a    Reference  http   php net array-combine P S  Be careful with source array containing duplicated keys like the following   a     one   two   one     Note the duplicated one element

User · Answer

Be careful  the solution proposed with  a   array combine  a   a   will not work for numeric values   I for example wanted to have a memory array 128 256 512 1024 2048 4096 8192 16384  to be the keys as well as the values however PHP manual states      If the input arrays have the same string keys  then the later value for that key will overwrite the previous one  If  however  the arrays contain numeric keys  the later value will not overwrite the original value  but will be appended    So I solved it like this   foreach  array as  key   gt   val         new array  val   val

[php] Array copy values to keys in PHP

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