> wfLoadExtension( 'PageImages' );
> $wgPageImagesExpandOpenSearchXml = true;
> $wgPageImagesLeadSectionOnly = true;
$wgPageImagesNamespaces = array( -1 => 0, 0 => 1, 1 => 0,
2 => 0, 3 => 0, 4 => 0, 5 => 0, 6 => 0, 7 => 0, 8 => 0, 9 => 0, 10 => 0, 11 => 0, 3000 => 0, 3002 => 0, 3004 => 0, 3006 => 1, 3008 => 1,
3018 => 1, 3020 => 1, 3022 => 1, 3024 => 1, 3026 => 1, 3028 => 1, 3030 => 1, 3030 => 1, 3032 => 1, 3034 => 1, 3036 => 1, 3038 => 1,
3040 => 1, 3042 => 1, 3044 => 1, 3046 => 1, 3048 => 1, 3050 => 1, 3052 => 1, 3054 => 1, 3056 => 1, 3058 => 1, 3060 => 1,
3062 => 1, 3064 => 1, 3066 => 1, 3068 => 1, 3070 => 1, 3072 => 1, 3074 => 1, 3076 => 1, 3078 => 1, 3080 => 1, 3082 => 1,
3084 => 1, 3086 => 1, 3088 => 1, 3090 => 1, 3094 => 1, 3096 => 1, 3098 => 1, 3100 => 1, 3102 => 1, 3104 => 1, 3106 => 1,
3108 => 1, 3110 => 1, 3112 => 1, 3114 => 1, 3116 => 1, 3118 => 1, 3120 => 1, 3122 => 1, 3124 => 1, 3126 => 1, 3128 => 1,
3130 => 1, 3132 => 1, 3134 => 1, 3136 => 1, 3138 => 1, 3140 => 1, 3142 => 1, 3144 => 1, 3146 => 1, 3148 => 1, 3150 => 1,
3152 => 1, 3154 => 1, 3156 => 1, 3158 => 1, 3160 => 1, 3162 => 1, 3164 => 1, 3166 => 1, 3168 => 1, 3170 => 1, 3172 => 1,
3174 => 1 );
I also tried the following, which didn't work.
$wgPageImagesNamespaces[] = 3036;