搜索
首页后端开发php教程PHP Array 学习记要(1)

PHP Array 学习记录(1)
关于数组的一些方法

$test_arr = array(			'name' => 'test',			2 => 2,			'color' => "red"		);		echo '使用var_dump方法输出数组:';			var_dump($test_arr);		echo '<br><br>使用print_r方法输出数组:';			print_r($test_arr);		if(is_array($test_arr)){			echo "<br><br>$ test_arr是一个数组";		}		echo "<br><br> array_push在数组添加项目";		array_push($test_arr,array('good','nice'),'three','four');		var_dump($test_arr);		echo "<br><br> array_pop用法";		array_pop($test_arr);		print_r($test_arr);		echo "<br><br> array_shift返回数组中的第一个元素";		$b = array_shift($test_arr);		print_r($b);		echo "<br><br> array_unshift:";		array_unshift($test_arr, 'unshift');		print_r($test_arr);				echo "<br><br> array_pad:";		$c = array_pad($test_arr, -7 , 'xiang');		print_r($c);				echo "<br><br> in_array:";		if(in_array(2, $test_arr)){			echo 'in_array through validate';		}else{			echo 'validate die.';			}		echo "<br><br> array_keys:返回数组键名组合成一个集合:";		$allmarke = array_keys($test_arr);		var_dump($allmarke);

待完善
声明
本文内容由网友自发贡献,版权归原作者所有,本站不承担相应法律责任。如您发现有涉嫌抄袭侵权的内容,请联系admin@php.cn
Apple iPhone 16 Pro as Leica smartphone: Leica subsidiary confirms camera grip with official Leica appApple iPhone 16 Pro as Leica smartphone: Leica subsidiary confirms camera grip with official Leica appJun 13, 2024 pm 08:52 PM

LeicareleasedtheLeicaLuxcameraappfortheAppleiPhoneafewdaysago.However,theappwasnotdevelopedbyLeica,butbyFjorden.ThecompanyhasbeenknownprimarilyforitscameragripsfortheiPhoneandwasacquiredbyLeicainDecember2023.Fo

Remote 3 universal remote control comes with touchscreen, but without subscription or server obligationRemote 3 universal remote control comes with touchscreen, but without subscription or server obligationJun 14, 2024 am 09:13 AM

SincethedemiseofLogitech'spopularHarmonyremotecontrols,themarketforhigh-qualityuniversalremotecontrolshasbeenfragmentedatbest.UnfoldedCircleaimstoavoidthefateoftheHarmonyUltimatebyeliminatinganyserverobligationsorsubs

Light Phone 3 launches with 50% discount, monochrome OLED and minimalist designLight Phone 3 launches with 50% discount, monochrome OLED and minimalist designJun 13, 2024 pm 10:18 PM

WhiletheLightPhone2from2018wasstillequippedwithaneconomicale-inkdisplay,theLightPhone3usesanOLEDdisplaythatcanonlydisplaygrayscale.Thereasonfortheswitchtothe3.92-inchOLEDpanelwithitsresolutionof1,240x1,080isth

Audio-Technica unveils ATH-S300BT wireless headphones with hear-through noise-cancellation, 90 hours battery life, and multipoint pairingAudio-Technica unveils ATH-S300BT wireless headphones with hear-through noise-cancellation, 90 hours battery life, and multipoint pairingJun 14, 2024 am 09:46 AM

Audio-TechnicahasunveiledtheATH-S300BTwirelessheadphoneswithhear-throughnoise-cancellation,multipointpairing,and90hoursofbatterylife.Thenoise-cancellingfeaturehasthreemodes:off,on,andhear-through,whereambientsoundscanbehea

使用C#中的Array.Sort函数对数组进行排序使用C#中的Array.Sort函数对数组进行排序Nov 18, 2023 am 10:37 AM

标题:C#中使用Array.Sort函数对数组进行排序的示例正文:在C#中,数组是一种常用的数据结构,经常需要对数组进行排序操作。C#提供了Array类,其中有Sort方法可以方便地对数组进行排序。本文将演示如何使用C#中的Array.Sort函数对数组进行排序,并提供具体的代码示例。首先,我们需要了解一下Array.Sort函数的基本用法。Array.So

First complete PCIe 7.0 IP solution presented by Synopsys coming to market in 2025 for HPCs and AI supercomputersFirst complete PCIe 7.0 IP solution presented by Synopsys coming to market in 2025 for HPCs and AI supercomputersJun 14, 2024 am 09:19 AM

Backin2022,whenPCIe7.0wasstartingtotakeshapeasafuturestandard,PCIe5.0wasjusthittingtheservermarketsandtheprospectofseeingPCIe6.0devicesavailableanytimesoon,letalonePCIe7.0ones,wasquitefar-fetched.CurrentlyPCIe5

Jabra discontinues Elite wireless earbuds lineupJabra discontinues Elite wireless earbuds lineupJun 14, 2024 am 09:39 AM

TheJabraEliteserieshascometoanend,withGNCEOPeterKarlstromerannouncingthediscontinuationofthewirelessearbudswithinthelineupinapressrelease.Petersaysthatthechangingmarketdynamicsandhowchallengingithasbecometogetas

Hackers recover $3 million in bitcoin from software wallet locked for over a decadeHackers recover $3 million in bitcoin from software wallet locked for over a decadeJun 14, 2024 am 09:57 AM

JoeGrand-anethicalhackerandYouTuberwhoiswidelyknownforhisprojectsinvolvingcryptowallets,hassuccessfullyrecoveredalife-changingamountofbitcoin,presentlyvaluednorthof$3millionfromasoftwarewalletthathasbeenlockedformo

See all articles

热AI工具

Undresser.AI Undress

Undresser.AI Undress

人工智能驱动的应用程序,用于创建逼真的裸体照片

AI Clothes Remover

AI Clothes Remover

用于从照片中去除衣服的在线人工智能工具。

Undress AI Tool

Undress AI Tool

免费脱衣服图片

Clothoff.io

Clothoff.io

AI脱衣机

AI Hentai Generator

AI Hentai Generator

免费生成ai无尽的。

热门文章

R.E.P.O.能量晶体解释及其做什么(黄色晶体)
2 周前By尊渡假赌尊渡假赌尊渡假赌
仓库:如何复兴队友
1 个月前By尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island冒险:如何获得巨型种子
4 周前By尊渡假赌尊渡假赌尊渡假赌

热工具

螳螂BT

螳螂BT

Mantis是一个易于部署的基于Web的缺陷跟踪工具,用于帮助产品缺陷跟踪。它需要PHP、MySQL和一个Web服务器。请查看我们的演示和托管服务。

VSCode Windows 64位 下载

VSCode Windows 64位 下载

微软推出的免费、功能强大的一款IDE编辑器

Dreamweaver Mac版

Dreamweaver Mac版

视觉化网页开发工具

SublimeText3 英文版

SublimeText3 英文版

推荐:为Win版本,支持代码提示!

记事本++7.3.1

记事本++7.3.1

好用且免费的代码编辑器