An external program or external instruction that executes the input command. The return string is only the last line returned by the external program execution, and if you need to return the information completely, you can use PassThru ()
String exec (string command,string [Array],int [Return_var])
Used to execute the instruction and output the result. If the Return_var parameter is present, the state after the command is executed is populated with the Return_var
String System (String Command,int [Return_var]
Executes as an external program and displays the original output
String PassThru (String command,int [Return_var])
Remove special symbols from a string
String escapeshellcmd (String command)
Used to lock files so that other processes cannot access them. The passed-in parameter FP is a file pointer. The value of the parameter operation is one of the following numbers: 1 indicates that the lock file can allow other processes to read, 2 indicates that only the process can write to the file, 3 means that read and write are locked, and 4 does not lock the file block (block)
BOOL Flock (int fp,int operation)
Extracts all <meta> flag content properties from a file and returns an array
Array get_meta_tags (string Filename[,int Use_include_path])
Reads an entire file into an array, each line as an array element
Array file (void)
Creates a writable temporary file that is automatically deleted when the fclose () function is called or when the script ends
Array tmpfile (void)
Open a file or URL and return a file pointer
int fopen (string filename,string mode)
Close an open file pointer
int fclose (int fp)
Test a file pointer to see if the end of the file
int feof (int fp)
Use the file pointer to get a row
String fgets (int fp,int length)
The same fgets () function, and also remove the HTML language in the retrieval string and the markup character of the PHP syntax
String fgetss (int fp,int length)
Gets the character that the file pointer refers to. The pointer returns False if it is EOF
string fgetc (int fp)
Writes string strings to the file data stream on the pointer FP. If length is specified, the length of the string is written, or the end of the string is written
int fwrite (int fp,string string,int [lenth])
Force a write operation to a file pointed to by the FP
int fflush (int fp)
Move the position of the file pointer to the beginning of the file
int rewind (int fp)
Returns the pointer offset bit (offset) value for the file FP. Returns False when an error occurs
int ftell (int fp)
Moves the file FP pointer to the specified offset bit (offset). When FP is opened by fopen () http://... Or ftp://... This function is invalid when you wait for a URL file
int fseek (int fp,int offset)
Reads the file and writes the file contents to the standard output device
int ReadFile (string filename)
Reads the file FP until EOF and outputs the data to standard output
int fpassthru (int fp)
The above describes the Pimchanok Leuwisetpaiboon [PHP] utility function 9, including Pimchanok Leuwisetpaiboon aspects of the content, I hope to be interested in the PHP tutorial friends helpful.
