后端开发|php教程
php,键值,某个
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$infos = array( array( a => 36, => xa, c => -08-28 00:00:00, d => /08/438488a00b3219929282e3652061c2e3.jpg ), array( a => 3, => vd, c => -08-20 00:00:00, d => /08/438488a00b3219929282e3652061c2e3.jpg ), array( a => 6, => wwe, c => -08-28 00:00:00, d => /08/438488a00b3219929282e3652061c2e3.jpg ), array( a => 36, => se, c => -08-28 00:00:00, d => /08/438488a00b3219929282e3652061c2e3.jpg ), array( a => 6, => aw, c => -08-28 00:00:00, d => /08/438488a00b3219929282e3652061c2e3.jpg ), array( a => 36, => v, c => -08-28 00:00:00, d => /08/438488a00b3219929282e3652061c2e3.jpg ), array( a => 12, => xx, c => -08-27 00:00:00, d => /08/438488a00b3219929282e3652061c2e3.jpg ));
处理要求：将数组中a相同的二维数组合并到一个数组中，生成一个新的数组
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代码：
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$info) { $result[$info[a]][] = $info; } print_r($result);
输出：
Array( [36] => Array ( [0] => Array ([a] => 36[b] => xa[c] => -08-28 00:00:00[d] => /08/438488a00b3219929282e3652061c2e3.jpg ) [1] => Array ([a] => 36[b] => se[c] => -08-28 00:00:00[d] => /08/438488a00b3219929282e3652061c2e3.jpg ) [2] => Array ([a] => 36[b] => bv[c] => -08-28 00:00:00[d] => /08/438488a00b3219929282e3652061c2e3.jpg ) ) [3] => Array ( [0] => Array ([a] => 3[b] => vd[c] => -08-20 00:00:00[d] => /08/438488a00b3219929282e3652061c2e3.jpg ) ) [6] => Array ( [0] => Array ([a] => 6[b] => wwe[c] => -08-28 00:00:00[d] => /08/438488a00b3219929282e3652061c2e3.jpg ) [1] => Array ([a] => 6[b] => aw[c] => -08-28 00:00:00[d] => /08/438488a00b3219929282e3652061c2e3.jpg ) ) [12] => Array ( [0] => Array ([a] => 12[b] => xx[c] => -08-27 00:00:00[d] => /08/438488a00b3219929282e3652061c2e3.jpg ) ))
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