¿Cómo dividir una matriz en función de un cierto valor?
Actualmente tengo una matriz de información basada en la ubicación similar a la siguiente (que ya está ordenada por hora). La primera clave / valor es un evento que representa el inicio de un viaje (00), un viaje en marcha (01) y el final de un viaje (10).
Array (
[0] => Array ( [event] => 00 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[1] => Array ( [event] => 01 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[2] => Array ( [event] => 01 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[3] => Array ( [event] => 01 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[4] => Array ( [event] => 01 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[5] => Array ( [event] => 10 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[6] => Array ( [event] => 00 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[7] => Array ( [event] => 01 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[8] => Array ( [event] => 01 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[9] => Array ( [event] => 01 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[10] => Array ( [event] => 01 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[11] => Array ( [event] => 01 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[12] => Array ( [event] => 01 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[13] => Array ( [event] => 10 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[14] => Array ( [event] => 00 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[15] => Array ( [event] => 01 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[16] => Array ( [event] => 01 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[17] => Array ( [event] => 01 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[18] => Array ( [event] => 10 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
)
¿Cómo puedo dividir aún más la matriz para que cree una nueva matriz para cada viaje, así que terminaría con esto:
Array (
[0] => Array (
[0] => Array ( [event] => 00 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[1] => Array ( [event] => 01 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[2] => Array ( [event] => 01 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[3] => Array ( [event] => 01 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[4] => Array ( [event] => 01 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[5] => Array ( [event] => 10 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
)
[1] => Array (
[0] => Array ( [event] => 00 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[1] => Array ( [event] => 01 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[2] => Array ( [event] => 01 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[3] => Array ( [event] => 01 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[4] => Array ( [event] => 01 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[5] => Array ( [event] => 01 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[6] => Array ( [event] => 01 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
[7] => Array ( [event] => 10 [time] => 1329293878 [lat] => 66.66666 [lon] => 11.11111 )
)
...
)
Todavía no he probado nada (excepto buscar en Google) ya que realmente no sé por dónde empezar.