我想制作PHP代码，可以从网页上获取文本。 theis代码从网站获取文本，然后搜索文本以“N”开头并以“a”结束然后脚本将其添加到数组[0]。 我在正则表达式中的错误，请帮我解决，抱歉我的英语不好
这是我的代码：
<?php
$url = "http://www.nokia.com/global/products/phone/lumia820/";
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch,CURLOPT_RETURNTRANSFER, 1);
$result = curl_exec($ch);
curl_exec($ch);
curl_close($ch);
preg_match_all('/^N(.*)\a$/', $result, $matches[0]);
preg_match_all('/^M(.*)\m$/', $result, $matches[0]);
preg_match_all('/^M(.*)\c$/', $result, $matches[0]);
print_r($matches[0]);
?>
如果我尝试使用html hor示例，如何将700 mAh作为数组[0]，将BL-5CA作为数组[2]，将诺基亚作为数组[3]
<div class="b-goods-specifications mod_cutted"> <div class="b-goods-specifications-item"> <ul class="b-goods-specifications-list"> <li class = "b-goods-specifications-row g-clearfix "> <div class="b-goods-specifications-cell"> <span> **capacity** </ span> </ div> <div class="b-goods-specifications-cell"> **700 mAh** </ div> </ li> <li class="b-goods-specifications-row g-clearfix"> <div class="b-goods-specifications-cell"> <span> **Model** </ span> </ div > <div class="b-goods-specifications-cell"> **BL-5CA** </ div> </ li> <li class="b-goods-specifications-row g-clearfix"> <div class = "b-goods-specifications-cell "> <span> **Brand** </ span> </ div> <div class="b-goods-specifications-cell"> **Nokia** </ div> </ li> <li class =" b-goods -specifications-row g-clearfix "> <div class="b-goods-specifications-cell"> <span> Type </ span> </ div> <div class="b-goods-specifications-cell"> Li -ion </ div> </ li> </ ul> </ div> </ div>
答案 0 :(得分：0)
这是无效的：
preg_match_all('/^N(.*)\a$/', $result, $matches[0]);
^^^--- here
应该只是$matches。当您稍后查看$匹配时，[0]将匹配的ENTIRE字符串（例如，您运行正则表达式的内容）和[1]，[2]等等将被捕获来自比赛的字符串。
同样，您对所有三个正则表达式使用相同的$matches[0]，这意味着您将覆盖结果，并且最终只得到LAST正则表达式的结果。你应该捕捉到不同的阵列，或者在每个阵列之后输出，这样你就不会失去你想要的东西。
答案 1 :(得分：0)
试试这个 的 '〜N（。*？）一〜SI'
preg_match_all('~N(.*?)a~si', $result, $matches[0]);
答案 2 :(得分：0)
preg_match_all('/N\w*?a/i', $result, $matches1);
preg_match_all('/M\w*?m/i', $result, $matches2);
preg_match_all('/M\w*?c/i', $result, $matches3);
echo "<pre>";
print_r($matches1[0]);
print_r($matches2[0]);
print_r($matches3[0]);
echo "</pre>";
输出：
Array
(
[0] => Nokia
[1] => Nokia
[2] => na
[3] => na
[4] => nitia
[5] => na
[6] => ngua
[7] => nokia
[8] => nokia
[9] => nonica
[10] => nokia
[11] => na
[12] => Nokia
[13] => na
[14] => Nokia
[15] => na
[16] => ncsea
[17] => Nokia
[18] => na
[19] => ncsea
[20] => na
[21] => ncsea
[22] => na
[23] => ncsea
[24] => na
[25] => ncsea
[26] => na
[27] => ncsea
[28] => na
[29] => ncsea
[30] => na
[31] => ncsea
[32] => nchda
[33] => na
[34] => ncsea
[35] => nokia
[36] => Nokia
[37] => na
[38] => ncsea
[39] => nokia
[40] => Nokia
[41] => na
[42] => ncsea
[43] => nokia
[44] => nokia
[45] => na
[46] => Na
[47] => Na
[48] => nloa
[49] => na
[50] => nta
[51] => nokia
[52] => nokia
[53] => nokia
[54] => Nokia
[55] => na
[56] => na
[57] => na
[58] => na
[59] => na
[60] => Nokia
[61] => Nokia
[62] => Nokia
[63] => Nokia
[64] => nnova
[65] => nnova
[66] => nnova
[67] => nokia
[68] => nokia
[69] => nokia
[70] => nokia
[71] => na
[72] => ncia
[73] => nokia
[74] => na
[75] => ncia
[76] => na
[77] => nokia
[78] => na
[79] => na
[80] => na
[81] => nokia
[82] => na
[83] => na
[84] => na
[85] => na
[86] => nokia
[87] => nokia
[88] => Nokia
[89] => Nokia
[90] => Nokia
[91] => nokia
[92] => Nokia
[93] => Nokia
[94] => nokia
[95] => na
[96] => nokia
[97] => Nokia
[98] => nokia
[99] => Nokia
[100] => nokia
[101] => Nokia
[102] => nokia
[103] => Nokia
[104] => nokia
[105] => Nokia
[106] => nokia
[107] => Nokia
[108] => Nokia
[109] => Nokia
[110] => nokia
[111] => na
[112] => nokia
[113] => nokia
[114] => nokia
[115] => nokia
[116] => nokia
[117] => nokia
[118] => Nokia
[119] => nokia
[120] => na
[121] => nokia
[122] => Nokia
[123] => nokia
[124] => Nokia
[125] => nokia
[126] => Nokia
[127] => nokia
[128] => Nokia
[129] => nokia
[130] => Nokia
[131] => nokia
[132] => Nokia
[133] => Nokia
[134] => Nokia
[135] => Nokia
[136] => nokia
[137] => Nokia
[138] => Nokia
[139] => Nokia
[140] => nokia
[141] => Nokia
[142] => nokia
[143] => Nokia
[144] => Nokia
[145] => Nokia
[146] => na
[147] => na
[148] => ndedA
[149] => na
[150] => na
[151] => nokia
[152] => nokia
[153] => nokia
[154] => nokia
[155] => Nokia
[156] => nokia
[157] => Nokia
[158] => nokia
[159] => na
[160] => nokia
[161] => nokia
[162] => nokia
[163] => nokia
[164] => nokia
[165] => nokia
[166] => Nokia
[167] => Nokia
[168] => Nokia
[169] => nokia
[170] => Nokia
[171] => nokia
[172] => na
[173] => nokia
[174] => nokia
[175] => nokia
[176] => nokia
[177] => nokia
[178] => nokia
[179] => Nokia
[180] => Nokia
[181] => Nokia
[182] => nokia
[183] => nokia
[184] => na
[185] => nokia
[186] => nokia
[187] => nokia
[188] => nokia
[189] => nokia
[190] => nokia
[191] => nokia
[192] => nokia
[193] => na
[194] => nokia
[195] => nokia
[196] => nokia
[197] => nokia
[198] => nokia
[199] => nokia
[200] => Nokia
[201] => Nokia
[202] => Nokia
[203] => nokia
[204] => nokia
[205] => Nokia
[206] => nokia
[207] => na
[208] => nokia
[209] => nokia
[210] => nokia
[211] => nokia
[212] => nokia
[213] => nokia
[214] => nokia
[215] => nokia
[216] => nokia
[217] => nokia
[218] => nokia
[219] => nokia
[220] => Nokia
[221] => Nokia
[222] => Nokia
[223] => nokia
[224] => nokia
[225] => na
[226] => nokia
[227] => nokia
[228] => nokia
[229] => nokia
[230] => nokia
[231] => nokia
[232] => na
[233] => na
[234] => na
[235] => na
[236] => Nokia
[237] => nokia
[238] => Nokia
[239] => Nokia
[240] => nokia
[241] => na
[242] => nokia
[243] => Nokia
[244] => nokia
[245] => Nokia
[246] => nokia
[247] => Nokia
[248] => nokia
[249] => Nokia
[250] => nokia
[251] => Nokia
[252] => Nokia
[253] => nokia
[254] => Nokia
[255] => Nokia
[256] => nokia
[257] => na
[258] => nokia
[259] => Nokia
[260] => nokia
[261] => Nokia
[262] => nokia
[263] => Nokia
[264] => nokia
[265] => Nokia
[266] => nokia
[267] => Nokia
[268] => ndedA
[269] => na
[270] => Nokia
[271] => Nokia
[272] => Nokia
[273] => nokia
[274] => Nokia
[275] => nokia
[276] => na
[277] => nokia
[278] => nokia
[279] => nokia
[280] => Nokia
[281] => na
[282] => Nokia
[283] => Nokia
[284] => Nokia
[285] => nokia
[286] => Nokia
[287] => nokia
[288] => na
[289] => nokia
[290] => nokia
[291] => nokia
[292] => Nokia
[293] => na
[294] => Nokia
[295] => Nokia
[296] => Nokia
[297] => nokia
[298] => Nokia
[299] => nokia
[300] => na
[301] => nokia
[302] => nokia
[303] => nokia
[304] => Nokia
[305] => nokia
[306] => na
[307] => na
[308] => na
[309] => ne_lumia
[310] => Nokia
[311] => nokia
[312] => Nokia
[313] => Nokia
[314] => nokia
[315] => na
[316] => nokia
[317] => Nokia
[318] => na
[319] => na
[320] => na
[321] => ne_lumia
[322] => nokia
[323] => nokia
[324] => na
[325] => nokia
[326] => Nokia
[327] => nnova
[328] => nokia
[329] => na
[330] => na
[331] => na
[332] => ne_lumia
[333] => na
[334] => nokia
[335] => na
[336] => na
[337] => nokia
[338] => na
[339] => nokia
[340] => na
[341] => na
[342] => na
[343] => na
[344] => ne_lumia
[345] => nokia
[346] => na
[347] => nokia
[348] => na
[349] => nokia
[350] => na
[351] => na
[352] => na
[353] => na
[354] => na
[355] => Nokia
[356] => Nokia
[357] => Nokia
[358] => Nokia
[359] => nnova
[360] => nnova
[361] => nnova
[362] => nokia
[363] => nokia
[364] => nokia
[365] => nokia
[366] => na
[367] => ncia
[368] => nokia
[369] => na
[370] => ncia
[371] => na
[372] => nokia
[373] => na
[374] => na
[375] => na
[376] => nokia
[377] => na
[378] => na
[379] => na
[380] => nokia
[381] => nokia
[382] => Nokia
[383] => na
[384] => nda
[385] => na
[386] => nokia
[387] => nventwithnokia
[388] => nokia
[389] => Nokia
[390] => nta
[391] => nta
[392] => nokia
[393] => na
[394] => Nokia
[395] => na
[396] => na
[397] => nokia
[398] => nokia
[399] => nokia
[400] => nokia
)
Array
(
[0] => maxim
[1] => milylum
[2] => mm
[3] => mobileXhtm
[4] => mobileXhtm
[5] => mobileXhtm
[6] => mobileXhtm
[7] => mobileXhtm
[8] => mobileXhtm
[9] => mobileXhtm
[10] => mobileXhtm
[11] => mobileXhtm
[12] => mobileXhtm
[13] => mobileXhtm
[14] => mobileXhtm
[15] => managem
[16] => Maxim
[17] => Maxim
[18] => Maxim
[19] => Maxim
[20] => mm
[21] => mm
[22] => mm
[23] => mm
[24] => mm
[25] => mm
[26] => mm
[27] => mobileXhtm
[28] => mobileXhtm
[29] => mobileXhtm
[30] => mobileXhtm
[31] => mobileXhtm
[32] => mobileXhtm
[33] => mobileXhtm
[34] => mobileXhtm
[35] => milylum
)
Array
(
[0] => m07AC
[1] => m07AC
[2] => mmendedAc
[3] => magic
[4] => mZYuf6c
[5] => mZYuf6c
[6] => Mic
[7] => Music
[8] => Music
[9] => music
[10] => music
[11] => Music
[12] => music
[13] => Music
[14] => music
[15] => music
[16] => music
[17] => music
[18] => music
[19] => music
[20] => Music
[21] => Music
[22] => Music
[23] => mmendedAc
[24] => matc
)