Şöyle bir kodum var

$idler="723834854,2902352,521651760,522334677,527309753,529539865,540620998,542074468,546463186,549796504,562065353,568898321,573851969,574852296,581714101,587139839,588644519,591399502,592778780,593782566,602682280,612203617,614614058,617032563,618578572,622653960,625954935,626186865,637530861,639307840,640834474,640884849,644913850,646733913,653753959,659424547,659773415,672844515,676855208,677046572,681208429,685319321,694849397,698819462,699338737,704214919,704489798,706857953,717544359,717759392,717917645,718559255,720593399,723523180,725002191,731781911,744613414,745165830,745872947,746153409,751109567,770879189,771919004,772833965,774561683,786208376,788489048,795130301,795299846,795869455,799604343,799661683,800159642,800909348,801121876,801641068,801865278,802253258,802781906,802787759,803222402,803590768,804352459,804357459,806443359,810469770,818759556,821412627,823199240,835869305,840869105,843023554,867975022,1009510853,1010188925,1021135608,1038943169,1043354327,1047145117,1090219491,1109745661,1111671966,1115414969,1125111664,1148495326,1161900153,1233999512,1257754012,1262012818,1284840862,1287942410,1391970490,1399800528,1405815328,1455616055,1455861789,1460563078,1475735726,1482220010,1487874628,1488750281,1488904204,1497514684,1499837091,1505560260,1511119785,1530582554,1539008718,1563763127,1567845872,1583227503,1597211745,1598062145,1602052034,1602910650,1614675842,1622477868,1656405723,1667093002,1667832472,100000074199182,100000083748668,100000104075871,100000105636682,100000107595551,100000201488695,100000221342584,100000243144439,100000270867441,100000297835437,100000326757227,100000346142007,100000400110256,100000433742857,100000437297528,100000577277131,100000642213292,100000678074853,100000690907185,100000841415437,100000966372722,100001037346676,100001155565560,100001156841234,100001204070463,100001208784489,100001490851927,100002321316220,100002352371962,100002370910403,100002551698578,100002808636827,100002925598823,100002941518702,100003017253484,100003130055805,100003181873278,100003188045157,100003190880391,100003237092689,100003521990295,100003566576643,100003574994202,100003788877210,100003928792442,100004582328899";

#Burda sayıların çokluğuna aldırmayın

$d=mysql_query("select * from uyeler where fid in ($idler)");

Şimdi şu $idler değişkenin ilk numarası olan 723834854 numara fid alanındaki içeriklerinden birinde mevcut,ben bu numarayı şu yukardaki numaraların ortasına,sonları vs. koyduğumda yok diyor kayıt bulunamadı diyor ama ilk sıralara koyduğum zaman problemsiz satır bulundu diyor.Nedenini anlayamadım nedendir ?