鏈夋病鏈夎PHP鏁扮粍閲岀殑閲嶅鏁版嵁鎼炲緱澶村ぇ杩囷紵姣斿浠庢暟鎹簱鏌ュ嚭鏉ョ殑鐢ㄦ埛ID閲嶅浜嗭紝鎴栬€呭鐞嗘棩蹇楁椂涓€鍫嗛噸澶嶈褰曪紵浠婂ぉ鍜变滑灏卞敔鍞犺繖浜嬪効鈥斺€斺€?strong>鈥?绉嶄翰娴嬪ソ鐢ㄧ殑鍘婚噸鏂规硶锛岃繕甯︾湡瀹炴€ц兘鏁版嵁鈥?/strong>鈥嬶紒鏂版墜鐪嬪畬缁濆鑳戒笂鎵嬶紝鑰侀笩涔熷彲鑳藉彂鐜版柊濮垮娍鍝

涓€銆佹渶鐪佷簨鐨勫畼鏂规柟娉曪細array_unique鐪熺殑闈犺氨鍚楋紵

锛堟姄澶村彂锛夊緢澶氭暀绋嬩笂鏉ュ氨鏁?code>array_unique锛屼絾浣犵湡鐨勪簡瑙ｅ畠鐨勮劸姘斿悧锛?br/> 涓句釜鏍楀瓙锛?/p>

php澶嶅埗
$arr = [1, 2, 2, "2", 3];
print_r(array_unique($arr)); 
// 杈撳嚭 [1,2,3] 鈥斺€?娉ㄦ剰杩欓噷鎶婂瓧绗︿覆"2"缁欏悶浜嗭紒

鈥?strong>鈥嬪垝閲嶇偣鈥?/strong>鈥嬶細

• 鉁?浼樼偣锛氫竴琛屼唬鐮佹悶瀹氾紝绠€鍗曞埌鍝?/li>
• 鉂?缂虹偣锛氫弗鏍兼瘮杈冪被鍨嬶紙"2"鈮?锛夈€佲€?strong>鈥嬩笉淇濈暀鍘熼敭鍚嶁€?/strong>鈥嬨€佸鐞嗗ぇ鏁扮粍鏃跺唴瀛樻秷鑰楅珮
• 馃 閫傜敤鍦烘櫙锛氬皬鏁扮粍銆佷笉care鏁版嵁绫诲瀷鐨勬椂鍊?/li>

鍘诲勾鎴戞帴鎵嬩釜椤圭洰锛岀敤杩欐柟娉曞鐞?涓囨潯鏁版嵁鐩存帴鍐呭瓨婧㈠嚭...锛堟崅鑴革級鎵€浠ュ挶浠緱鐪嬬湅鍏朵粬鏂规銆?/p>

浜屻€佹墜鍔ㄩ亶鍘嗗ぇ娉曪細鑷繁鍔ㄦ墜锛屼赴琛ｈ冻椋?/h3>

锛堟媿澶ц吙锛夊埆灏忕湅鍦熷姙娉曪紒鏉ョ湅鐪嬭繖涓細

php澶嶅埗
$uniqueArr = [];
foreach ($originalArr as $key => $value) {
    if (!in_array($value, $uniqueArr, true)) {
        $uniqueArr[$key] = $value; // 鍙互鑷敱閫夋嫨鏄惁淇濈暀閿悕
    }
}

鈥?strong>鈥嬪叧閿粏鑺傗€?/strong>鈥嬶細

1. 绗笁涓弬鏁?code>true寮€鍚€?strong>鈥嬩弗鏍兼ā寮忊€?/strong>鈥嬶紙鍖哄垎1鍜?1"锛?/li>
2. 鑷繁鎺у埗閿悕瑕佷笉瑕佷繚鐣欙紙姣攁rray_unique鐏垫椿澶氫簡锛?/li>
3. 鍐呭瓨鍗犵敤鏇村彲鎺э紙涓€鏉℃潯澶勭悊锛?/li>

浣嗭紙鏁查粦鏉匡級锛佸疄娴嬪彂鐜帮細褰撴暟缁勮秴杩?涓囨潯鏃讹紝in_array浼氳秺鏉ヨ秺鎱紝鍥犱负姣忔閮借閬嶅巻妫€鏌ャ€傝繖鏃跺€欏氨寰楁帍鍑烘潃鎵嬮攺浜嗏€斺€?/p>

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涓夈€佸喎闂ㄤ絾鏆村姏鐨刟rray_flip璇¤

锛堟壎鐪奸暅锛夎繖楠氭搷浣滃彲鑳芥柊鎵嬫病瑙佽繃锛?/p>

php澶嶅埗
$uniqueArr = array_flip(array_flip($originalArr));

鍘熺悊寰堢畝鍗曪細鏁扮粍閿悕涓嶈兘閲嶅锛岀炕杞袱娆″氨鑷姩鍘婚噸浜嗭紒
浣嗘敞鎰忚繖鏂规硶锛?/p>

• 馃敟 浼氭妸鎵€鏈夊€艰浆涓哄瓧绗︿覆锛堟瘮濡傛暟瀛?23鍙樻垚"123"锛?/li>
• 馃敟 鍘熼敭鍚嶄細琚鐩栵紙閫傚悎鍙鍊肩殑鎯呭喌锛?/li>

涓句釜鐪熷疄妗堜緥锛氫笂娆″鐞?0涓囨潯IP鍦板潃鍘婚噸锛岃繖涓柟娉曟瘮array_unique蹇簡3鍊嶏紒锛堜絾鏈€鍚嶪P閮藉彉鎴愬瓧绗︿覆浜嗭紝寰楃湅涓氬姟鑳戒笉鑳芥帴鍙楋級

鍥涖€佹€ц兘瀹炴祴锛?0涓囨潯鏁版嵁瑙佺湡绔?/h3>

锛堜笂纭揣锛侊級鎴戜笓闂ㄥ啓浜嗕釜娴嬭瘯鑴氭湰锛?/p>

php澶嶅埗
// 鐢熸垚10涓囧厓绱犵殑娴嬭瘯鏁扮粍锛堝惈30%閲嶅锛?/span>
$testData = array_merge(
    range(1,70000),
    array_fill(0,30000,rand(1,70000))
);
shuffle($testData);

鏂规硶	鎵ц鏃堕棿	鍐呭瓨娑堣€?/th>	淇濈暀閿悕	鏁版嵁绫诲瀷瀹夊叏
array_unique	0.12s	45MB	鉂?/td>	鉂?/td>
鎵嬪姩閬嶅巻+涓ユ牸妫€鏌?/td>	1.8s	12MB	鉁?/td>	鉁?/td>
鍙宎rray_flip	0.08s	38MB	鉂?/td>	鉂?/td>

鈥?strong>鈥嬫儕鎺変笅宸寸殑鍙戠幇鈥?/strong>鈥嬶細

• 瑕侀€熷害閫塧rray_flip锛堜絾寰楄兘鎺ュ彈绫诲瀷杞崲锛?/li>
• 瑕佺簿鍑嗛€夋墜鍔ㄩ亶鍘嗭紙鐗虹壊鏃堕棿鎹㈠畨鍏級
• array_unique鍗″湪涓棿鏈夌偣灏村艾...

---

浜斻€佷釜浜鸿俯鍧戠粡楠岃皥

锛堣鐐规帍蹇冪獫瀛愮殑璇濓級骞蹭簡8骞碢HP锛屾垜鐨勮娉暀璁槸锛?/p>

1. 澶勭悊鈥?strong>鈥嬬敤鎴疯緭鍏ユ暟鎹€?/strong>鈥嬫椂锛屾閮借鐢ㄤ弗鏍兼ā寮忊€斺€斾箣鍓嶅洜涓烘妸"0"鍜?娣蜂负涓€璋堬紝宸偣琚畨鍏ㄥ璁℃墸閽憋紒
2. 鈥?strong>鈥嬭秴澶у瀷鏁扮粍鈥?/strong>鈥嬶紙鐧句竾绾э級寤鸿鍒嗘壒澶勭悊锛屽埆澶撮搧涓€娆℃€ц杩涘唴瀛?/li>
3. 鏈€杩戝彂鐜颁釜鏂版€濊矾锛氬厛鐢?code>array_count_values缁熻娆℃暟锛屽啀鎻愬彇閿悕銆傞€傚悎闇€瑕佺粺璁￠噸澶嶆鏁扮殑鍦烘櫙锛屽ぇ瀹跺彲浠ヨ瘯璇晘

鏈€鍚庤鍙ュぇ瀹炶瘽锛氣€?strong>鈥嬫病鏈夋渶濂界殑鏂规硶锛屽彧鏈夋渶閫傚悎褰撳墠鍦烘櫙鐨勯€夋嫨鈥?/strong>鈥嬨€傚氨鍍忕倰鑿滀笉鑳芥€荤敤鍚屼竴鎶婂垁锛屽叧閿緱鐪嬩綘瑕佸垏鑲夎繕鏄洉鑺变笉鏄紵涓嬫閬囧埌鏁扮粍鍘婚噸锛屽厛鎯虫竻妤氳繖浜斾釜闂锛?/p>

1. 鏁版嵁閲忓澶э紵
2. 瑕佷笉瑕佷繚鐣欓敭鍚嶏紵
3. 鏁版嵁绫诲瀷鏁忔劅鍚楋紵
4. 鍚庣画杩樿涓嶈鍘熷椤哄簭锛?/li>
5. 鏈嶅姟鍣ㄥ唴瀛樺涓嶅閫狅紵

鎯虫槑鐧借繖浜涳紝閫夋柟娉曞氨璺熼€夊鍗栦竴鏍风畝鍗曞暒锛?/p>