简单 php 数组总和不起作用（加起来为零）
Simple php array sum not working (add's up to zero)
我有一个自动生成的数组 liek 所以..（看起来像真实数据但已匿名）..
Array
(
[16280] => Array
(
[0] => 16280
[1] => 19-04696-34480
[2] => Helen*smith
[3] => helen smith
[4] => hellieh77@live.com
[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求和，但是两者..
<?php echo $order[25] + $order[77]; ?>
和
<?php
$sum1 = array($order[25], $order[77]);
echo array_sum($sum1);
?>
结果为“0”，而在此示例中它应该加起来为 1.49，请问我做错了什么？
这与必须转换它们（整数或字符串）有关吗？如果可以，我该怎么做？
您可以使用以下方法将字符串转换为浮点数：
<?php echo floatval(substr($order[25], 1, 4)) + floatval(substr($order[77], 1, 4)); ?>
我有一个自动生成的数组 liek 所以..（看起来像真实数据但已匿名）..
Array
(
[16280] => Array
(
[0] => 16280
[1] => 19-04696-34480
[2] => Helen*smith
[3] => helen smith
[4] => hellieh77@live.com
[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求和，但是两者..
<?php echo $order[25] + $order[77]; ?>
和
<?php
$sum1 = array($order[25], $order[77]);
echo array_sum($sum1);
?>
结果为“0”，而在此示例中它应该加起来为 1.49，请问我做错了什么？ 这与必须转换它们（整数或字符串）有关吗？如果可以，我该怎么做？
您可以使用以下方法将字符串转换为浮点数：
<?php echo floatval(substr($order[25], 1, 4)) + floatval(substr($order[77], 1, 4)); ?>