PHP gets the summary of each value in the form_PHP tutorial
How to submit form
1. GET method
Function: Get the data submitted by get method
Format: $_GET[“formelement”]
2. POST method
Function: Get the data submitted by post
Format: $_POST["formelement"]
3. REQUEST method
Function: Get data submitted in any way
Format: $_REQUEST["formelement"]
Check box and list box (the name is in the form of an array such as: "select[]", just use $_POST["select"] when getting its value) There are examples below:
Add page--list box:
Receiving page:
# echo $_POST["selt"]
print_r($_POST["selt"]);
?>
Checkbox:Add page:
Receiving page:
#echo $_POST["username"];
#echo $_GET["username"];
#echo $_REQUEST["username"]
#echo $username;
//echo $_POST["chkval"];
print_r($_POST["chkval"]);
?>
1. Get the value in the text box: $_POST["text"]
Here you can check whether the magic switch is on (it is on by default). If it is not on, you can use addslashes($_POST["text"]); to format it in HTML. The statement is as follows:
if(get_magic_quotes_gpc())
{
//Open status
echo "Open status
";
echo stripslashes($_POST["text"]);
}
else
{
echo addslashes($_POST["text"]);
}
2. File upload:
File upload code:
$f=$_FILES['files'];
$dest_dir='uploads';//Set the upload directory
$dest=$dest_dir.‘/’.$f[‘name’];//Set file name
$r=move_uploaded_file($f['tmp_name'],$dest);
#chmod($dest, 0755);//Set the attributes of the uploaded file
move_uploaded_file ($file,$destc)
Move uploaded files to new location
upload_file.php
upload.php
#echo $_FILES["fls"];
#print_r($_FILES["fls"]);
//echo $_FILES["fls"]["name"]; www.2cto.com
$f=$_FILES["fls"];//Get the value in the file box
$dest_dir="uploads";//Set the upload directory
$dest=$dest_dir."/".date("ymdhji").$f["name"];//Set file name
move_uploaded_file($f["tmp_name"],$dest);
#move_uploaded_file()
?>
Excerpted from hurry’s column

ThesecrettokeepingaPHP-poweredwebsiterunningsmoothlyunderheavyloadinvolvesseveralkeystrategies:1)ImplementopcodecachingwithOPcachetoreducescriptexecutiontime,2)UsedatabasequerycachingwithRedistolessendatabaseload,3)LeverageCDNslikeCloudflareforservin

You should care about DependencyInjection(DI) because it makes your code clearer and easier to maintain. 1) DI makes it more modular by decoupling classes, 2) improves the convenience of testing and code flexibility, 3) Use DI containers to manage complex dependencies, but pay attention to performance impact and circular dependencies, 4) The best practice is to rely on abstract interfaces to achieve loose coupling.

Yes,optimizingaPHPapplicationispossibleandessential.1)ImplementcachingusingAPCutoreducedatabaseload.2)Optimizedatabaseswithindexing,efficientqueries,andconnectionpooling.3)Enhancecodewithbuilt-infunctions,avoidingglobalvariables,andusingopcodecaching

ThekeystrategiestosignificantlyboostPHPapplicationperformanceare:1)UseopcodecachinglikeOPcachetoreduceexecutiontime,2)Optimizedatabaseinteractionswithpreparedstatementsandproperindexing,3)ConfigurewebserverslikeNginxwithPHP-FPMforbetterperformance,4)

APHPDependencyInjectionContainerisatoolthatmanagesclassdependencies,enhancingcodemodularity,testability,andmaintainability.Itactsasacentralhubforcreatingandinjectingdependencies,thusreducingtightcouplingandeasingunittesting.

Select DependencyInjection (DI) for large applications, ServiceLocator is suitable for small projects or prototypes. 1) DI improves the testability and modularity of the code through constructor injection. 2) ServiceLocator obtains services through center registration, which is convenient but may lead to an increase in code coupling.

PHPapplicationscanbeoptimizedforspeedandefficiencyby:1)enablingopcacheinphp.ini,2)usingpreparedstatementswithPDOfordatabasequeries,3)replacingloopswitharray_filterandarray_mapfordataprocessing,4)configuringNginxasareverseproxy,5)implementingcachingwi

PHPemailvalidationinvolvesthreesteps:1)Formatvalidationusingregularexpressionstochecktheemailformat;2)DNSvalidationtoensurethedomainhasavalidMXrecord;3)SMTPvalidation,themostthoroughmethod,whichchecksifthemailboxexistsbyconnectingtotheSMTPserver.Impl


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