How to accurately control and judge has become a "small problem" in PHP. The following is a sentence excerpted from the book.
Copy code The code is as follows:
$filename = "html/cache.txt";
$contents = "I am Zhang Bin";
if(is_writable($filename)){
if(($handle = fopen($filename,"a") )== false){
echo "Failed to write file $filename";
exit();
}
if(fwrite($handle,$contents) == false){
echo "Write to file$ filename failed";
exit();
}
echo "Writing file $filename succeeded";
fclose($handle);
}else{
echo "File $filename cannot be written";
}
?>
Programming section: Pay attention to the symbols in the Chinese and English input methods, especially after Chinese ";"!
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