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PHP ?? ?? ??

Jul 28, 2016 am 08:27 AM
auto gt sort val

PHP?? ??? ?? ????? ??? ????. ? ?? ?? ??? ???? ???? ???????. ?? ????? PHP7.0 ????? ??? ????.
 解讀PHP數(shù)組排序


  • sort( ) — ??? ?? ???? ?? ???? ?????. ? ??? ?? ?? ??? ?? ?????. bool sort ( array &$array [, int $sort_flags = SORT_REGULAR ] )??? ??? ? ?? ???? ? ?? ??? ???? sort_flags? ??? ?? ???? ?? ?? ??? ?????.
<code><span><span><?php</span><span>$auto</span> = <span>array</span>(<span>"bens2"</span>,<span>"honda3"</span>,<span>"BMW4"</span>,<span>"aens1"</span>,<span>"BMW5"</span>);
sort(<span>$auto</span>,SORT_STRING|SORT_FLAG_CASE);<span>//不區(qū)分大小寫排序字符串</span><span>foreach</span>(<span>$auto</span><span>as</span><span>$key</span>=><span>$val</span>)
{
    <span>echo</span><span>"auto["</span>.<span>$key</span>.<span>"]="</span>.<span>$val</span>.<span>"\n"</span>;
    <span>//輸出auto[0]=BMW4 auto[1]=BMW5 auto[2]=aens1 auto[3]=bens2 auto[4]=honda3</span>
}</span></span></code>
  • rsort — ??? ??????. ???? ??? sort? ???? ?? ??
<code><span><span><?php</span><span>$auto</span> = <span>array</span>(<span>"bens2"</span>,<span>"honda3"</span>,<span>"BMW4"</span>,<span>"aens1"</span>,<span>"BMW5"</span>);
rsort(<span>$auto</span>,SORT_STRING|SORT_FLAG_CASE);<span>//不區(qū)分大小寫排序字符串</span><span>foreach</span>(<span>$auto</span><span>as</span><span>$key</span>=><span>$val</span>)
{
    <span>echo</span><span>"auto["</span>.<span>$key</span>.<span>"]="</span>.<span>$val</span>.<span>"\n"</span>;
    <span>//輸出auto[0]=honda3 auto[1]=BMW5 auto[2]=BMW4 auto[3]=bens2 auto[4]=aens1</span>
}</span></span></code>

    asort() — ??? ???? ??? ??? ?????. ?? ?? ? ?? ?? ?? ?????. ???? ??? "? ??? ??? ?????. ??? ??? ???? ????. ?? ??? ??? ??? ?? ?????. "?????? ?? ?? ??? ??? ?? ??? ?????. ?? ??? ??? ?? ???? ???. ?? ????. ksort()? ???? ????.
<code><span><span><?php</span><span>$auto</span> = <span>array</span>(<span>"a"</span>=><span>"bens2"</span>,<span>"b"</span>=><span>"honda3"</span>,<span>"c"</span>=><span>"BMW4"</span>,<span>"d"</span>=><span>"aens1"</span>,<span>"e"</span>=><span>"BMW5"</span>);
asort(<span>$auto</span>,SORT_STRING|SORT_FLAG_CASE);<span>//不區(qū)分大小寫排序字符串</span><span>foreach</span>(<span>$auto</span><span>as</span><span>$key</span>=><span>$val</span>)
{
    <span>echo</span><span>"auto["</span>.<span>$key</span>.<span>"]="</span>.<span>$val</span>.<span>"\n"</span>;
    <span>//輸出auto[d]=aens1 auto[a]=bens2 auto[c]=BMW4 auto[e]=BMW5 auto[b]=honda3</span>
}</span></span></code>
    arsort() — ??? ???? ???? ??? ??? ?????.
<code><span><span><?php</span><span>$auto</span> = <span>array</span>(<span>"a"</span>=><span>"bens2"</span>,<span>"b"</span>=><span>"honda3"</span>,<span>"c"</span>=><span>"BMW4"</span>,<span>"d"</span>=><span>"aens1"</span>,<span>"e"</span>=><span>"BMW5"</span>);
arsort(<span>$auto</span>,SORT_STRING|SORT_FLAG_CASE);<span>//不區(qū)分大小寫排序字符串</span><span>foreach</span>(<span>$auto</span><span>as</span><span>$key</span>=><span>$val</span>)
{
    <span>echo</span><span>"auto["</span>.<span>$key</span>.<span>"]="</span>.<span>$val</span>.<span>"\n"</span>;
    <span>//輸出auto[b]=honda3 auto[e]=BMW5 auto[c]=BMW4 auto[a]=bens2 auto[d]=aens1</span>
}</span></span></code>

    ksort() - ? ??? ?? ??? ?????. ????? "? ??? ?? ??? ???? ? ?? ???? ?????. ??? ??????. ? ??? ?? "?? ??? ??" ????? ?? ?? sort()
<code><span><span><?php</span><span>$auto</span> = <span>array</span>(<span>"b"</span>=><span>"bens2"</span>,<span>"a"</span>=><span>"honda3"</span>,<span>"d"</span>=><span>"BMW4"</span>,<span>"c"</span>=><span>"aens1"</span>,<span>"e"</span>=><span>"BMW5"</span>);
ksort(<span>$auto</span>,SORT_STRING|SORT_FLAG_CASE);<span>//不區(qū)分大小寫排序字符串</span><span>foreach</span>(<span>$auto</span><span>as</span><span>$key</span>=><span>$val</span>)
{
    <span>echo</span><span>"auto["</span>.<span>$key</span>.<span>"]="</span>.<span>$val</span>.<span>"\n"</span>;
    <span>//輸出auto[a]=honda3 auto[b]=bens2 auto[c]=aens1 auto[d]=BMW4 auto[e]=BMW5</span>
}</span></span></code>
    krsort — ??? ???? ???? ?? ?????. ? ????? ???? ????? ?? ?? ?? ?????.
<code><span><span><?php</span><span>$auto</span> = <span>array</span>(<span>"b"</span>=><span>"bens2"</span>,<span>"a"</span>=><span>"honda3"</span>,<span>"d"</span>=><span>"BMW4"</span>,<span>"c"</span>=><span>"aens1"</span>,<span>"e"</span>=><span>"BMW5"</span>);
ksort(<span>$auto</span>,SORT_STRING|SORT_FLAG_CASE);<span>//不區(qū)分大小寫排序字符串</span><span>foreach</span>(<span>$auto</span><span>as</span><span>$key</span>=><span>$val</span>)
{
    <span>echo</span><span>"auto["</span>.<span>$key</span>.<span>"]="</span>.<span>$val</span>.<span>"\n"</span>;
    <span>//輸出auto[a]=honda3 auto[b]=bens2 auto[c]=aens1 auto[d]=BMW4 auto[e]=BMW5</span>
}</span></span></code>

    natsort — "?? ??" ????? ???? ??? ?????. "? ??? ???? ????? ??? ???? ???? ?? ?? ???? ?? ????? ?????. ?? ?/? ??? ???? ?? "?? ??"??? ?? sort()? ?? ??? ????. ??? ????? ??>
  • shuffle() — ??? ????. ? ??? ?? ?? ??? ??? ?? ??? ?? ???????. ?? ?? true ?? false???
<code><span><span><?php</span><span>$auto</span> = <span>array</span>(<span>"b"</span>=><span>"bens2"</span>,<span>"e"</span>=><span>"bens20"</span>,<span>"a"</span>=><span>"bens31"</span>,<span>"d"</span>=><span>"bens41"</span>,<span>"c"</span>=><span>"bens1"</span>,<span>"e"</span>=><span>"bens15"</span>);
sort(<span>$auto</span>,SORT_STRING|SORT_FLAG_CASE);<span>//不區(qū)分大小寫排序字符串</span><span>echo</span><span>"sort排序:<br>"</span>;
<span>foreach</span>(<span>$auto</span><span>as</span><span>$key</span>=><span>$val</span>)
{
    <span>echo</span><span>"auto["</span>.<span>$key</span>.<span>"]="</span>.<span>$val</span>.<span>"<br>"</span>;

}
<span>$auto1</span> = <span>array</span>(<span>"b"</span>=><span>"bens2"</span>,<span>"e"</span>=><span>"bens20"</span>,<span>"a"</span>=><span>"bens31"</span>,<span>"d"</span>=><span>"bens41"</span>,<span>"c"</span>=><span>"bens1"</span>,<span>"e"</span>=><span>"bens15"</span>);
natsort(<span>$auto1</span>);<span>//參數(shù)只有一個</span><span>echo</span><span>"natsort排序:<br>"</span>;
<span>foreach</span>(<span>$auto1</span><span>as</span><span>$key</span>=><span>$val</span>)
{
    <span>echo</span><span>"auto["</span>.<span>$key</span>.<span>"]="</span>.<span>$val</span>.<span>"<br>"</span>;

}
<span>//輸出</span><span>/* sort排序:
auto[0]=bens1
auto[1]=bens15
auto[2]=bens2
auto[3]=bens31
auto[4]=bens41
natsort排序:
auto[c]=bens1
auto[b]=bens2
auto[e]=bens15
auto[a]=bens31
auto[d]=bens41 */</span></span></span></code>

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???? PHP ?? ??? ??? ?????, PHP ????? ??? ?? ????? ??? ??? ????.
<code><span><span><?php</span><span>$auto1</span> = <span>array</span>(<span>"b"</span>=><span>"bens2"</span>,<span>"e"</span>=><span>"bens20"</span>,<span>"a"</span>=><span>"bens31"</span>,<span>"d"</span>=><span>"bens41"</span>,<span>"c"</span>=><span>"bens1"</span>,<span>"e"</span>=><span>"bens15"</span>);
shuffle(<span>$auto1</span>);
<span>foreach</span>(<span>$auto1</span><span>as</span><span>$key</span>=><span>$val</span>)
{
    <span>echo</span><span>"auto["</span>.<span>$key</span>.<span>"]="</span>.<span>$val</span>.<span>"<br>"</span>;

}
<span>//輸出</span><span>/* auto[0]=bens41
auto[1]=bens15
auto[2]=bens1
auto[3]=bens2
auto[4]=bens31 */</span></span></span></code>
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