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PHP
In PHP 8, we use classes, properties, and class constants, methods, functions, parameters to access the attributes.In PHP 8, Reflection API delivers the getAttribute() method on every matching Reflection object.The getAttribute() method returns an array of ReflectionAttribute illustrations that can be asked for attribute name, arguments and to instantiate an instance of the signified attribute.Example − Reading Attributes with the Reflection API in PHP 8OutputArray ( [Reading] => Array ( ) [Property] => Array ( [type] => function [name] => Student ) )
When we compare a numeric in PHP 8, it will use number comparison. Else it will convert the number to a string and will use the string comparison.The string can be categorized in three ways −A string that contains only numeric. Example − 1234 or 1.24e1.A leading–numeric string − A leading string starts with a numeric string but it should be followed with non-numeric characters including the white space. Example − 12xyz or “123”Non-numeric string − The string which cannot be numeric and also a non-leading numeric string.Example − PHP 70=='foo' // PHP 7 will return true.Example − PHP 80 ... Read More
To run the PowerShell script from the command prompt, we can use the below command.ExampleFor example, we have a script TestPS.ps1 which first starts the spooler service and then copies a file to a different location. We need to call this script using the command prompt.C:\> PowerShell.exe -command "C:\temp\TestPS.ps1"The above command is similar to running individual PowerShell commands. Here we are providing the path of the script.OutputC:\>PowerShell.exe -command "C:\temp\TestPS.ps1" VERBOSE: Performing the operation "Start-Service" on target "Print Spooler (Spooler)". Status Name DisplayName ------ ----- ---------- Running Spooler Print Spooler VERBOSE: Performing the operation "Copy File" on target "Item: C:\Temp\EnvVariable.txt Destination: ... Read More
If we want to delete the hidden files and folders from the C:\temp on the local computer, we need to use the command shown in this example.ExampleBut first, the below command helps us to retrieve the hidden files and folders from the C:\temp.Get-ChildItem C:\Temp -Hidden -RecurseWe just need to pipe the Remove-Item command and to remove forcibly use -Force parameter.Get-ChildItem C:\Temp -Hidden -Recurse | Remove-Item -Force -VerboseOutput
To delete empty files and folders, we need to first retrieve the list and which has been shown in the earlier articles.ExampleIn this article, we are using the logic that if we find an empty file or folder we will delete them. To implement that logic, use the below script.gci C:\Temp -Recurse | foreach { if($_.Length -eq 0){ Write-Output "Removing Empty File $($_.FullName)" $_.FullName | Remove-Item -Force } if( $_.psiscontainer -eq $true){ if((gci ... Read More
The ConvertFrom-String command converts the String to the Hashtable format as shown below.ExamplePS C:\> "This is string" | ConvertFrom-StringOutputP1 P2 P3 -- -- -- This is stringIn the above example, We haven’t specified any header so that the output is separated the delimiter by space P1, P2 and continuous. By default, this command separates the string with a ‘=’ delimiter as shown below.Example$stringhash = @" Name = Spooler Starttype = Manual Status = Stopped "@ $stringhash | ConvertFrom-StringDataOutputName Value ---- ----- ... Read More
ExampleFor example, we have a below-created hashtable.PS C:\> $servicehash = @{Name='Spooler';State='Stopped';StartType='Automatic'} PS C:\> $servicehashOutputName Value ---- ----- Name Spooler StartType Automatic State StoppedWe need to add multiple values to the Name Key. If we directly append the value to the key it will treat it as a string and we will not get the desired output. See the example below.ExamplePS C:\> $servicehash.Name += "Winrm" PS C:\> $servicehashOutputName Value ---- ----- Name SpoolerWinrm StartType Automatic State StoppedSo to add the multiple ... Read More
We will first retrieve the content of the folder using the Get-ChildItem command and then pipeline the Measure-Object command as shown below.Get-ChildItem C:\Temp\ -Recurse | Measure-Object -Property Length -SumOutputCount : 1514 Average : Sum : 372060503 Maximum : Minimum : Property : LengthSo the above output shows that there is a total of 1514 files and folders and the sum shows the size of all the files and folders combined in KB. We can convert it to the MB as shown below.(Get-ChildItem C:\Temp\ -Recurse | Measure-Object -Property Length -Sum).Sum / 1MB 354.824545860291We can get the round figure, [Math]::Round( ... Read More
To run Powershell commands from the command prompt or cmd, we need to call the PowerShell process PowerShell.exe.ExampleSee the sample example, C:\> Powershell.exe -Command "Write-Output 'Hello world'" Hello worldSimilarly, you can call any command. We will use another example to get service informationC:\> Powershell.exe -Command "Get-Service Spooler" Status Name DisplayName ------ ---- ----------- Running Spooler Print SpoolerTo run multiple commands, C:\> Powershell.exe -Command "Stop-Service Spooler -verbose -passthru; Start-Service Spooler -verbose -passthru"OutputVERBOSE: Performing the operation "Stop-Service" on target "Print Spooler (Spooler)". Status Name DisplayName ------ ---- ----------- Stopped Spooler Print Spooler VERBOSE: Performing the operation "Start-Service" on ... Read More
To get the list of empty folder on the windows OS using PowerShell, we can use the below method.gci C:\Temp -Recurse | foreach { if( $_.psiscontainer -eq $true){ if((gci $_.FullName) -eq $null){$_.FullName} } }The above command checks the C:\Temp folder and its subfolders and if the content is empty it returns the Folder full path. The PSISContainer property stands for the folder and GCI is the alias of the Get-ChildItem command. We can alternatively use the below command, instead of using the PSISContainer property.gci C:\Temp -Recurse -Directory | foreach { if((gci $_.FullName) -eq $null){$_.FullName} }