Examples of three possible methods for reading file content in PHP_PHP Tutorial

Three methods for php to read file content:

//**************The first reading method************ *******************

Copy code The code is as follows:

header ("content-type:text/html;charset=utf-8");
//File path
$file_path="text.txt";
//Determine whether this file exists
if(file_exists($file_path)){
if($fp=fopen($file_path,"a+")){
//Read file
$conn=fread($fp,filesize($ file_path));
//Replace string
$conn=str_replace("rn","
",$conn);
echo $conn."
}else{
echo "The file cannot be opened";
}
}else{
echo "There is no such file";
}
fclose($ fp);

//************************Second reading method**************** ****************

Copy code The code is as follows:

header( "content-type:text/html;charset=utf-8");
//File path
$file_path="text.txt";
$conn=file_get_contents($file_path);
$conn=str_replace("rn","
",file_get_contents($file_path));
echo $conn;
fclose($fp);

//******************The third reading method, loop reading**********************

Copy code The code is as follows:

header("content-type:text/html;charset=utf-8");
//File path
$file_path="text.txt";
//Judge whether the file exists
if(file_exists($file_path)){
//Judge whether the file can be opened
if($fp=fopen($file_path,"a+")){
$buffer=1024;
//Judge whether the end of the file is reached while reading
$str="";
while(!feof($fp)){
$str.=fread($fp,$buffer);
}
}else{
echo "File cannot be opened";
}
}else{
echo "No such file";
}
//Replacement characters
$str=str_replace("rn","
",$str) ;
echo $str;
fclose($fp);
Function to read INI configuration file:
$arr=parse_ini_file("config.ini");
//returned is an array
echo $arr['host']."
";
echo $arr['username']."
";
echo $arr ['password']."
";

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