Bab 16
PHP File Handling
Dalam
PHP, fungsi fopen() digunakan untuk membuka file.
Membuka File
Program16-1.php
<html>
<body>
<?php
$file=fopen("welcome.txt","r");
?>
</body>
</html>
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Mode pembukaan file
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Mode
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Keterangan
|
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r
|
Read
only. Starts at the beginning of the file
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r+
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Read/Write.
Starts at the beginning of the file
|
|
w
|
Write
only. Opens and clears the contents of file; or creates a new file if it
doesn't exist
|
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w+
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Read/Write.
Opens and clears the contents of file; or creates a new file if it doesn't
exist
|
|
a
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Append.
Opens and writes to the end of the file or creates a new file if it doesn't
exist
|
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a+
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Read/Append.
Preserves file content by writing to the end of the file
|
|
x
|
Write
only. Creates a new file. Returns FALSE and an error if file already exists
|
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x+
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Read/Write.
Creates a new file. Returns FALSE and an error if file already exists
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Catatan: Jika fopen() tidak dapat membuka
file, maka akan mengembalikan nilai 0 (false).
Program16-2.php
<html>
<body>
<?php
$file=fopen("welcome.txt","r") or exit("Unable to open file!");
?>
</body>
</html>
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Menutup File
Program16-3.php
<?php
$file = fopen("test.txt","r");
//some code to be executed
fclose($file);
?>
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Memeriksa EOF
(End Of File)
Catatan:
Kita tidak dapat membaca file yang terbuka dalam mode w, a, dan x!
if (feof($file)) echo "End of file";
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Membaca file baris per baris (fgets())
Program16-4.php
<?php
$file = fopen("welcome.txt", "r") or exit("Unable to open file!");
//Output a line of the file until the end is reached
while(!feof($file))
{
echo fgets($file). "<br />";
}
fclose($file);
?>
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Membaca file karakter per karakter (fgetc())
Program16-5.php
<?php
$file=fopen("welcome.txt","r") or exit("Unable to open file!");
while (!feof($file))
{
echo fgetc($file);
}
fclose($file);
?>
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