// klasör varmı yokmu kontrol ************************************************************************************************** : Notes">

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<?php

$klasor_adi = "deneme";

if(file_exists($klasor_adi))
{
echo "Klasör var.";
}
else
{
echo "Klasör yok.";
}

?>

// klasör varmı yokmu kontrol

******************************************************************************************************************************************************************

<?php

$dosya_adi = "index.php";

if(file_exists($dosya_adi))
{
echo "Dosya var.";
}
else
{
echo "Dosya yok.";
}

?>

// dosya varmı yokmu kontrol
******************************************************************************************************************************************************************

<?php

$dosya_veya_klasor_adi = "test";

if(is_file($dosya_veya_klasor_adi))
{
echo "Bu bir dosyadır!";
}

if(is_dir($dosya_veya_klasor_adi))
{
echo "Bu bir klasördür!";
}

?>

// bir klasörmü bir dosyamı

******************************************************************************************************************************************************************



<?php

$klasor_adi = "dosya";

if(file_exists($klasor_adi))
{
echo "Klasör zaten var!";
exit();//İşlemi durdur
}

$olustur = mkdir("$klasor_adi");

if($olustur)
{
echo "Klasör oluşturuldu.";
}
else
{
echo "Klasör oluşturulamadı!";
}

?>

// klasör oluşturma varmı yokmu kontrol


******************************************************************************************************************************************************************

<?php

$klasor_adi = "test";

if(!file_exists($klasor_adi))
{
echo "Silinecek klasör yok!";
exit();//İşlemi durdur
}

$klasor_sil = rmdir($klasor_adi);

if($klasor_sil)
{

echo "Klasör silindi.";

}
else
{

echo "Klasör silinemedi!";

}

?>


// klasör silme

******************************************************************************************************************************************************************


<?php

$dosya_adi="dosya.txt";

if (file_exists($dosya_adi))
{
echo "Dosya zaten var!";
}
else

{
touch($dosya_adi);
echo "Dosya oluşturuldu.";
}

?>


// dosya oluşturma (x.txt vb.)

******************************************************************************************************************************************************************



<?php

$dosya = "dosya.txt";

$dosya=fopen($dosya,"a");

$veri_yazdir="deneme123 ";

fwrite($dosya, $veri_yazdir);

echo "veri yazdırıldı.";

fclose($dosya);

?>

// dosya aç dosyaya yazdır.


******************************************************************************************************************************************************************


<?php
$dosya = fopen("dosya.txt","r");

if(!($dosya))
{
echo "dosya.txt bulunamadı.";
exit();
}

while(!feof($dosya))
{
$satir = fgets($dosya, 255);
echo("$satir");
}

fclose($dosya);
?>

// dosyayı aç dosyayı oku dosyayı ekrana yazdır.

******************************************************************************************************************************************************************



<?php

$dosya_adi="dosya.txt";

if(!file_exists($dosya_adi))
{
echo "Silinecek dosya yok!";
exit();//İşlemi durdur
}

unlink($dosya_adi);
echo "Dosya silindi.";

?>


// dosya silme

******************************************************************************************************************************************************************

<?
$dir = "c:/deneme/";
if ($dosya = (fopen ("$dir/dosya.txt" , 'r') ) ) {
echo "Dosya Açıldı";
}
else {
echo "Dosya Açılmadı.";
}
while ( ! feof ($dosya ) ) {
$satir = fgets ( $dosya, 1024 ) ;
echo ("$satir");
}
fclose ($dosya);
?>
******************************************************************************************************************************************************************


<?
$dosya = fopen("dosya.txt" , 'a') or die ("Dosya açılamıyor!") ;
?>

******************************************************************************************************************************************************************

$_fILES --> ile koyduğumuz dosya nesnesinden seçileni çekiyoruz
$kaynak =$_FILES["dosya"]["tmp_name"];
$hedef=$_FILES["dosya"]["name"];
copy($kaynak,$hedef);
echo "<img src=".$hedef."/>";

// KOPYALAMA İŞLEMİ

******************************************************************************************************************************************************************

<?php
$random=rand(1,10);
$ac=fopen("metin.txt","w");
fwrite($ac,$random);
fclose($ac);


$dosya=fopen("metin.txt","r");
while(!feof($dosya))
{if($random<$ac)
echo "girilen sayı daha büyük";
else if($ac<$random)
echo "random değeri daha büyük";
else
echo "sayılar biribirine eşittir";

$oku=fgets($dosya);


}
echo $random;

fclose($dosya);
?>

// random ile metine değer atarak karşılaştırma.


******************************************************************************************************************************************************************

$dosya = fopen("dosya.txt","r");

if(!($dosya))
{
exit();
}

while(!feof($dosya))
{

$satir = fgets($dosya);
echo("$satir <br>");

if($satir == $a)
echo"sayıyı doğru tahmin ettiniz.";
else
echo"tahmininiz yanlış.";
}

fclose($dosya);

//sayı tahmini kodlar


******************************************************************************************************************************************************************

<?php
/*5 basamaklı bir sayının basamak çözümlemesin yapan program*/
$sayi=12345;

$birler = $sayi % 10;
$sayi = $sayi / 10;

$onlar = $sayi % 10;
$sayi = $sayi / 10;

$yuzler = $sayi % 10;
$sayi = $sayi / 10;

$binler = $sayi % 10;
$sayi = $sayi / 10;

$onbinler = $sayi %10;
$sayi=$sayi/10;

echo "birler :".$birler."<br>";
echo "onlar :".$onlar."<br>";
echo "yuzler :".$yuzler."<br>";
echo "binler :".$binler."<br>";
echo "onbinler :".$onbinler."<br>";

echo "<font color=red>osman karadeniz</font>";
?>

// basamak çözümleme mod1

******************************************************************************************************************************************************************

<?php
/* basamak çözümleme farklı teknik ile (umut pc) */
error_reporting(0);
$sayi=12345;
$basamak= array();
for($i=0;$i<=4;$i++)
{
$mod=$sayi%10;
$sayi=$sayi-$mod;
$sayi=$sayi/10;
$basamak[$i]=$mod;
}

echo "birler basamagı :".$basamak[0]."<br>";
echo "onlar basmagı :" .$basamak[1]."<br>";
echo "yüzler basmagı :" .$basamak[2]."<br>";
echo "binler basmagı :" .$basamak[3]."<br>";
echo "onbinler basmagı :" .$basamak[4]."<br>";

?>

// basamak çözümleme mod2

******************************************************************************************************************************************************************

/* 1 dan 10 A kadar olan çarpım tablosu OSMAN KARADENİZ*/
error_reporting(0);
echo "<table border=1 style=border-color:blue>";

for($s=1;$s<=10;$s++)
{
for($g=1;$g<=10;$g++)
{echo "<td>".$s."*".$g.": "."<font color=red>".($s*$g)."</font></td>";}
echo "</tr>";
}

echo "</table>";

************************************************************************************************************************************************************************************************************************************************************************************************************
<?php
$ders1not1=15;
$ders1not2=25;
$ders1perf1=59;
$ders1perf2=60;

$ders2not1=24;
$ders2not2=23;
$ders2perf1=58;
$ders2perf2=62;

$ders3not1=11;
$ders3not2=33;
$ders3perf1=53;
$ders3perf2=60;

$ders4not1=13;
$ders4not2=25;
$ders4perf1=49;
$ders4perf2=60;


$dersler1="internet programcılığı";
$dersler2="grafik ve tasarım";
$dersler3="Gelişmiş.İ.U";
$dersler4="AKİS";
echo "<table border=1 style=text-align:center;> ";
echo "<tr>";
for($i=1;$i<=5;$i++)
{


for($y=1;$y<=6;$y++)
{

if($y==1)
{
echo "<td> dersler </td>";
echo "<td>Sınav 1</td>";
echo "<td>Sınav 2</td>";
echo "<td>Performans 1</td>";
echo "<td>Performans 2</td>";
echo "<td> <font color=red>ortalama </font> </td>";
echo "</tr>";

}


if($y==2)
{
$ortalama1=($ders1not1+$ders1not2+$ders1perf1+$ders1perf2)/4;
echo "<td>".$dersler1."</td>";
echo "<td>".$ders1not1."</td>";
echo "<td>".$ders1not2."</td>";
echo "<td>".$ders1perf1."</td>";
echo "<td>".$ders1perf2."</td>";
echo "<td> <font color=red>ortalama".$ortalama1."</font> </td>";
echo "</tr>";

}


if($y==3)
{
$ortalama2=($ders2not1+$ders2not2+$ders2perf1+$ders2perf2)/4;
echo "<td>".$dersler2.".</td>";
echo "<td>".$ders2not1."</td>";
echo "<td>".$ders2not2."</td>";
echo "<td>".$ders2perf1."</td>";
echo "<td>".$ders2perf2."</td>";
echo "<td> <font color=red>ortalama".$ortalama2."</font> </td>";
echo "</tr>";

}

if($y==4)
{
$ortalama3=($ders3not1+$ders3not2+$ders3perf1+$ders3perf2)/4;
echo "<td>".$dersler3.".</td>";
echo "<td>".$ders3not1."</td>";
echo "<td>".$ders3not2."</td>";
echo "<td>".$ders3perf1."</td>";
echo "<td>".$ders3perf2."</td>";
echo "<td> <font color=red>ortalama".$ortalama3."</font> </td>";
echo "</tr>";

}

if($y==5)
{
$ortalama4=($ders4not1+$ders4not2+$ders4perf1+$ders4perf2)/4;
echo "<td>".$dersler4.".</td>";
echo "<td>".$ders4not1."</td>";
echo "<td>".$ders4not2."</td>";
echo "<td>".$ders4perf1."</td>";
echo "<td>".$ders4perf2."</td>";
echo "<td> <font color=red>ortalama".$ortalama4."</font> </td>";
echo "</tr>";
echo "<p style=text-align:center;color:red;>osman karadeniz</p>";
exit;
}


}



}

echo "</table>";
?>


***************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************

$toplam=0;
for($i=0;$i<=100;$i++)
{if($i%2==1) // çift sayılar için "0" tek sayılar için "1";
{$toplam=$toplam+$i;}
}
echo "0 dan 100 e kadar olan tek sayıların toplamı : ".$toplam."<br>";



************************************************************************************************************************************************************************************************************************************************************

<?php
$ay=5;
switch($ay)
{
case 0: echo "Ocak"; break;
case 1: echo "Şubat"; break;
case 2: echo "Mart"; break;
case 3: echo "Nisan"; break;
case 4: echo "Mayıs"; break;
case 5: echo "Haziran"; break;
case 6: echo "Temmuz"; break;
case 7: echo "Ağustos"; break;
case 8: echo "Eylül"; break;
case 9: echo "Ekim"; break;
case 10: echo "Kasım"; break;
case 11: echo "Aralık"; break;
default: echo "0-11 arası değer giriniz"; break;
}

?>


// aylar php

// if(empty($a))
$sicaklik=null;
//isset : değer varmı yokmu.
//empty boş ise şart.. (null boş)
if(isset($sicaklik))
{echo "değer var";}
else if(empty($sicaklik))
{echo "değer yok";}

//rmdir("mert");
unlink("sonuc.txt");
************************************************************************************************************************************************************************************************************************************************************



$dgmgn=mktime(0,0,0,10,5,2000);
$dgmtrh=getdate($dgmgn);
echo $dgmtrh["weekday"];
echo date("d F Y l",mktime(0,0,0,10,12,2017));

************************************************************************************************************************************************************************************************************************************************************


<?php
$simdi=time();
$zaman=mktime(0,0,0,1,1,2017);
$fark=abs($simdi-$zaman);
$gun=floor($fark/(24*60*60));
$saat=floor(($fark-$gun*24*60*60)/(60*60));
$dakika=floor(($fark-($gun*24*60*60+$saat*60*60))/60);
$saniye=$fark-($gun*24*60*60+$saat*60*60+$dakika*60);
echo "1 Ocak 2017 ile aramızda $gun gün $saat saat $dakika dakika $saniye saniye vardır.";
?>

// ö n e m l i

************************************************************************************************************************************************************************************************************************************************************

<?php
$sayi=rand(1,10);
$sayim=5;


$yaz=fopen("sonuc.txt","w");
fwrite($yaz,"$sayi");
fclose($yaz);


$ac=fopen("sonuc.txt","r");
while(!feof($ac))
{
$oku=fgets($ac);
echo "İstenen sayı=".$oku."<br>";
echo "Tuttuğunuz sayı=".$sayim."<br>";
if($oku>$sayim)
echo "Tahmin ettiğiniz sayı daha büyük olmalı";
else if($oku<$sayim)
echo "Tahmin ettiğiniz sayı daha küçük olmalı";
else
echo "Tebrikler tuttuğunuz sayı doğru";
}
fclose($ac);
?>


************************************************************************************************************************************************************************************************************************************************************


<?php

$simdi=time();
echo $simdi."<br>";
$dk=$simdi/60;
$saat=$dk/60;
$gun=floor($saat/24);
$yil=floor($gun/365);
echo $dk."<br>";
echo $saat."<br>";
echo $gun."<br>";
echo $yil."<br>";
echo date("d/m/y");






?>
     
 
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