eliminar valores duplicados en una matriz multidimensional - php, multidimensional-array

Tengo un multi dim. matriz con valores duplicados. Lo necesito para mostrar un solo valor de cada uno en un menú desplegable, que a su vez se usa para una consulta de búsqueda. Los índices no son importantes aquí. Intenté con array_map, serialize, array_unique, etc., pero no puedo hacerlo bien. Algunos valores siempre salen dos veces.

Estoy en la versión 4.3.2 de PHP, así que no puedo usar funciones creadas después de esa versión.

La matriz se ve así:

Formación (

[1] => Array
(
[1] => 0,9
[2] => 1,3
[3] => 1,6
[4] => 1,5
[5] => 0,0
[6] => 1,2
)

[2] => Array
(
[3] => 1,0
[4] => 2,0
[5] => 1,78
[6] => 1,44
[7] => 1,87
[8] => 1,56
[9] => 2,4
[10] => 2,93
[11] => 2,50
[12] => 1,4
[13] => 6,0
[14] => 4,0
[15] => 1,80
[16] => 3,00
)

[3] => Array
(
[5] => 1,0
[6] => 1,2
[7] => 1,5
[8] => 1,6
)

[4] => Array
(
[7] => 1,0
)

[5] => Array
(
[1] => 1,0
[2] => 1,5
[3] => 2,0
[4] => 2,5
[5] => 3,0
[6] => 3,5
[7] => 4,0
[8] => 4,5
)

[6] => Array
(
[1] => 1,5
[2] => 2,0
[3] => 2,5
[4] => 3,0
[5] => 3,5
[6] => 4,0
[7] => 4,5
[8] => 5,0
[9] => 5,5
[10] => 6,0
[11] => 6,5
[12] => 7,0
[13] => 7,5
[14] => 8,0
[15] => 8,5
[16] => 9,0
[17] => 9,5
[18] => 10,0
)

[7] => Array
(
[15] => 0,65
[16] => 0,75
[17] => 0,85
[18] => 0,90
[19] => 1,00
[20] => 1,10
[21] => 1,15
[22] => 1,25
[23] => 1,50
[24] => 1,55
[25] => 1,60
[26] => 1,80
[27] => 1,85
[28] => 2,00
[29] => 2,10
)

[8] => Array
(
[30] => 0,90
[31] => 1,00
)

[10] => Array
(
[34] => 0,65
[35] => 0,75
[36] => 0,85
[37] => 0,90
[38] => 1,00
[39] => 1,10
[40] => 1,15
[41] => 1,25
[42] => 1,50
[43] => 1,55
[44] => 1,60
[45] => 1,80
[46] => 1,85
[47] => 2,00
[48] => 2,10
)

[11] => Array
(
[34] => 1,0
[35] => 1,5
[36] => 2,0
[37] => 2,5
[38] => 3,0
[39] => 3,5
[40] => 4,0
[41] => 4,5
)

[12] => Array
(
[43] => 1,00
)

[13] => Array
(
[45] => 2,00
[46] => 2,20
[47] => 2,50
[48] => 2,75
[49] => 3,00
[50] => 3,25
[51] => 3,50
[52] => 2,60
[53] => 2,85
[54] => 1,50
[55] => 2,10
[56] => 2,35
[57] => 2,80
[58] => 2,40
[59] => 2,70
[60] => 2,25
[61] => 3,40
[62] => 2,55
[63] => 2,30
[64] => 2,65
)

)

Cualquier ayuda sería apreciada.

Respuestas

Para hacer que cada subarreglo sea único en comparación con otros subarreglos (el orden es importante):

$array = array_map("unserialize", array_unique(array_map("serialize", $array)));

Para hacer únicos valores dentro de cada sub-matriz única:

$array = array_map("array_unique", $array);

$array = array_map("unserialize", array_unique(array_map("serialize", $array)));

es exactamente lo que intenté, y desde ese mismo hilo, pero sale así:

Array(
[1] => Array
(
[1] => 0,9
[2] => 1,3
[3] => 1,6
[4] => 1,5
[5] => 0,0
[6] => 1,2
)

[2] => Array
(
[3] => 1,0
[4] => 2,0
[5] => 1,78
[6] => 1,44
[7] => 1,87
[8] => 1,56
[9] => 2,4
[10] => 2,93
[11] => 2,50
[12] => 1,4
[13] => 6,0
[14] => 4,0
[15] => 1,80
[16] => 3,00
)

[3] => Array
(
[5] => 1,0
[6] => 1,2
[7] => 1,5
[8] => 1,6
)

[4] => Array
(
[7] => 1,0
)

[5] => Array
(
[1] => 1,0
[2] => 1,5
[3] => 2,0
[4] => 2,5
[5] => 3,0
[6] => 3,5
[7] => 4,0
[8] => 4,5
)

[6] => Array
(
[1] => 1,5
[2] => 2,0
[3] => 2,5
[4] => 3,0
[5] => 3,5
[6] => 4,0
[7] => 4,5
[8] => 5,0
[9] => 5,5
[10] => 6,0
[11] => 6,5
[12] => 7,0
[13] => 7,5
[14] => 8,0
[15] => 8,5
[16] => 9,0
[17] => 9,5
[18] => 10,0
)

[7] => Array
(
[15] => 0,65
[16] => 0,75
[17] => 0,85
[18] => 0,90
[19] => 1,00
[20] => 1,10
[21] => 1,15
[22] => 1,25
[23] => 1,50
[24] => 1,55
[25] => 1,60
[26] => 1,80
[27] => 1,85
[28] => 2,00
[29] => 2,10
)

[8] => Array
(
[30] => 0,90
[31] => 1,00
)

[10] => Array
(
[34] => 0,65
[35] => 0,75
[36] => 0,85
[37] => 0,90
[38] => 1,00
[39] => 1,10
[40] => 1,15
[41] => 1,25
[42] => 1,50
[43] => 1,55
[44] => 1,60
[45] => 1,80
[46] => 1,85
[47] => 2,00
[48] => 2,10
)

[11] => Array
(
[34] => 1,0
[35] => 1,5
[36] => 2,0
[37] => 2,5
[38] => 3,0
[39] => 3,5
[40] => 4,0
[41] => 4,5
)

[12] => Array
(
[43] => 1,00
)

[13] => Array
(
[45] => 2,00
[46] => 2,20
[47] => 2,50
[48] => 2,75
[49] => 3,00
[50] => 3,25
[51] => 3,50
[52] => 2,60
[53] => 2,85
[54] => 1,50
[55] => 2,10
[56] => 2,35
[57] => 2,80
[58] => 2,40
[59] => 2,70
[60] => 2,25
[61] => 3,40
[62] => 2,55
[63] => 2,30
[64] => 2,65
)
)

Y todavía tengo múltiples valores como 1,0