我有一个自动生成的数组，所以..（看起来像真实数据，但是已经匿名了。。]]
Array ( [16280] => Array ( [0] => 16280 [1] => 19-04696-34480 [2] => Helen*smith [3] => helen smith [4] => [email protected] [5] => [6] => 1 green hill [7] => Sedgley [8] => Dudley [9] => West Midlands [10] => DY4 2BJ [11] => United Kingdom [12] => Helen smith [13] => +44 7780 123456 [14] => 1 green hill [15] => Sedgley [16] => Dudley [17] => West Midlands [18] => DY4 2BJ [19] => United Kingdom [20] => [21] => [22] => [23] => [24] => 4 [25] => £1.99 [26] => £0.00 [27] => [28] => £0.00 [29] => £0.00 [30] => £1.99 [31] => No [32] => PayPal [33] => 20-Mar-20 [34] => 20-Mar-20 [35] => [36] => [37] => [38] => [39] => [40] => [41] => [42] => 97A17674UX562625N [43] => Royal Mail 1st Class [44] => [45] => [46] => [47] => No [48] => [49] => No [50] => [51] => No [52] => 16280 [53] => 19-04696-34480 [54] => Helen*smith [55] => [56] => [57] => [58] => [59] => [60] => [61] => [62] => [63] => [64] => [65] => [66] => [67] => [68] => [69] => [70] => [71] => [72] => 302804824258 [73] => SAVE A BIKER OPEN YOUR EYES - THINK BIKE DECAL STICKER WALL CAR VAN LAPTOP BIKE [74] => Default Colour (if non specified) = WHITE [75] => No [76] => 1 [77] => £0.50 [78] => [79] => [80] => [81] => [82] => [83] => [84] => [85] => 20-Mar-20 [86] => [87] => 23-Mar-20 [88] => [89] => [90] => [91] => No [92] => [93] => [94] => [95] => [96] => [97] => 1726051559020 [98] => [99] => [100] => [101] => [102] => [103] => [104] => 16280 [105] => 19-04696-34480 [106] => Helen*smith [107] => [108] => [109] => [110] => [111] => [112] => [113] => [114] => [115] => [116] => [117] => [118] => [119] => [120] => [121] => [122] => [123] => [124] => 303176299926 [125] => Personalised Mrs Hinch /Zoflora/Lenor 2x Vinyl Stickers Storage Baskets Bottles[Glossy Yellow,25mm (2.5cm)] [126] => CLNLBL_Gl_50 [127] => No [128] => 1 [129] => £0.46 [130] => [131] => [132] => [133] => [134] => [135] => [136] => [137] => 20-Mar-20 [138] => [139] => 23-Mar-20 [140] => [141] => [142] => [143] => No [144] => [145] => [146] => [147] => [148] => [149] => 1726051564020 [150] => [Colour:Glossy Yellow,Size (Height):25mm (2.5cm)] [151] => [152] => [153] => [154] => [155] => [156] => 16280 [157] => 19-04696-34480 [158] => Helen*smith [159] => [160] => [161] => [162] => [163] => [164] => [165] => [166] => [167] => [168] => [169] => [170] => [171] => [172] => [173] => [174] => [175] => [176] => 303261272249 [177] => Heart Spiral Optical Illusion - Love - Vinyl Decal Sticker - 16 Colour Choices[Red,Standard,STD 95x95mm] [178] => heartspiral _Re_ST_St [179] => No [180] => 1 [181] => £0.45 [182] => [183] => [184] => [185] => [186] => [187] => [188] => [189] => 20-Mar-20 [190] => [191] => 23-Mar-20 [192] => [193] => [194] => [195] => No [196] => [197] => [198] => [199] => [200] => [201] => 1726051560020 [202] => [Colour:Red,Fitment:Standard,Size:STD 95x95mm] [203] => [204] => [205] => [206] => [207] => [208] => 16280 [209] => 19-04696-34480 [210] => Helen*smith [211] => [212] => [213] => [214] => [215] => [216] => [217] => [218] => [219] => [220] => [221] => [222] => [223] => [224] => [225] => [226] => [227] => [228] => 303383128781 [229] => Not all disabilities are visible (CIRCLE Design) Vinyl Sticker for Car/Van/Wall[Reverse Cut,STD 95x95mm,White] [230] => Notalldisabilitiescircle_Li_XL_St [231] => No [232] => 1 [233] => £0.58 [234] => [235] => [236] => [237] => [238] => [239] => [240] => [241] => 20-Mar-20 [242] => [243] => 23-Mar-20 [244] => [245] => [246] => [247] => No [248] => [249] => [250] => [251] => [252] => [253] => 1726051562020 [254] => [Fitment:Reverse Cut,Sticker Size:STD 95x95mm,Sticker Colour:White] [255] => [256] => [257] => [258] => [259] => ) )[我正在尝试做一个简单的加法加法运算，但两者都..
<?php echo $order[25] + $order[77]; ?>和
<?php $sum1 = array($order[25], $order[77]); echo array_sum($sum1); ?>在此示例中，当结果总计为1.49时，结果为“ 0”，请问我在做什么错？与必须转换它们（整数或字符串）有关吗？如果是这样，我该如何处理？
我有一个自动生成的数组，所以..（看起来像真实数据，但已匿名）。Array（[16280] => Array（[0] => 16280 [1] => 19-04696-34480。 ..
您可以使用以下方法将字符串转换为浮点数：