使用内置函数解决PHP多维数组排序问题
学习PHP时,你可能会遇到PHP多维数组排序问题,这里将介绍PHP多维数组排序问题的解决方法,在这里拿出来和大家分享一下,希望对大家有帮助。
<ol class="dp-xml"> <li class="alt"><span><span class="tag"></span><span class="tag-name">php</span><span> </span></span></li> <li class=""><span>functioncmp($a,$b){ </span></li> <li class="alt"><span>if($a[”nums”]==$b[”nums”]){ </span></li> <li class=""><span>return0; </span></li> <li class="alt"><span>} </span></li> <li class=""> <span>return($a[”nums”]</span><span class="tag"><span>$b[”nums”])?-1:1; </span></span> </li> <li class="alt"><span>} </span></li> <li class=""> <span>$</span><span class="attribute">arr</span><span>=</span><span class="attribute-value">Array</span><span>( </span> </li> <li class="alt"> <span></span><span class="attribute">0</span><span>=</span><span class="tag">></span><span>Array( </span> </li> <li class=""> <span>“username”=</span><span class="tag">></span><span>owen, </span> </li> <li class="alt"> <span>“nums”=</span><span class="tag">></span><span>2, </span> </li> <li class=""><span>), </span></li> <li class="alt"> <span></span><span class="attribute">1</span><span>=</span><span class="tag">></span><span>Array( </span> </li> <li class=""> <span>“username”=</span><span class="tag">></span><span>d5s, </span> </li> <li class="alt"> <span>“nums”=</span><span class="tag">></span><span>5, </span> </li> <li class=""><span>), </span></li> <li class="alt"> <span></span><span class="attribute">2</span><span>=</span><span class="tag">></span><span>Array( </span> </li> <li class=""> <span>“username”=</span><span class="tag">></span><span>pt, </span> </li> <li class="alt"> <span>“nums”=</span><span class="tag">></span><span>3, </span> </li> <li class=""><span>), </span></li> <li class="alt"><span>); </span></li> <li class=""><span>uasort($arr,“cmp”); </span></li> <li class="alt"> <span>echo‘</span><span class="tag"><span class="attribute">prestyle</span><span class="tag-name">prestyle</span><span>=”text-align:left”</span><span class="tag">></span><span>’; </span></span> </li> <li class=""><span>print_r($arr); </span></li> <li class="alt"> <span>echo‘</span><span class="tag"><span class="tag-name">pre</span><span class="tag">></span><span>’; </span></span> </li> <li class=""> <span></span><span class="tag">?></span><span> </span> </li> <li class="alt"><span> </span></li> <li class=""><span>Array </span></li> <li class="alt"><span>( </span></li> <li class=""> <span>[0]=</span><span class="tag">></span><span>Array </span> </li> <li class="alt"><span>( </span></li> <li class=""> <span>[username]=</span><span class="tag">></span><span>owen </span> </li> <li class="alt"> <span>[nums]=</span><span class="tag">></span><span>2 </span> </li> <li class=""><span>) </span></li> <li class="alt"><span> </span></li> <li class=""> <span>[2]=</span><span class="tag">></span><span>Array </span> </li> <li class="alt"><span>( </span></li> <li class=""> <span>[username]=</span><span class="tag">></span><span>pt </span> </li> <li class="alt"> <span>[nums]=</span><span class="tag">></span><span>3 </span> </li> <li class=""><span>) </span></li> <li class="alt"><span> </span></li> <li class=""> <span>[1]=</span><span class="tag">></span><span>Array </span> </li> <li class="alt"><span>( </span></li> <li class=""> <span>[username]=</span><span class="tag">></span><span>d5s </span> </li> <li class="alt"> <span>[nums]=</span><span class="tag">></span><span>5 </span> </li> <li class=""><span>) </span></li> <li class="alt"><span> </span></li> <li class=""><span>) </span></li> </ol>

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