PHP | pclose( ) Function (original) (raw)
Last Updated : 01 Jun, 2018
The pclose() closes a pipe opened by the popen() function. The file pointer initiated by the popen() function must be closed with pclose().
The pipe specified by popen() function is sent as a parameter to the pclose() function and it returns the termination status of the process that was run, or -1 in case of an error.
Syntax:
pclose(pipe)
Parameters Used:
The pclose() function in PHP accepts only one parameter.
- pipe : It is a mandatory parameter which specifies the pipe opened by the popen() function.
Return Value:
It returns the termination status of the process that was run, or -1 in case of an error.
Errors And Exceptions:
- To obtain the real exit status code the pcntl_wexitstatus() function should be used.
- pclose() returns 0 on every platform in case popen() could not execute the specified command.
Examples:
Input : $my_file = popen("/bin/ls", "r"); pclose($my_file); Output : 1
Input : $my_file = popen('/executable/gfg.exe', 'r'); echo "'my_file'; " . get_class($my_file) . "\n"; fileread=fread(file_read = fread(fileread=fread(my_file, 4192); echo $file_read; pclose($my_file);
Output : 1
Below programs illustrate the pclose() function.
Program 1
<?php
$my_file = popen( "/bin/ls" , "r" );
pclose( $my_file );
?>
Output:
1
Program 2
<?php
$my_file = popen( '/executable/gfg.exe' , 'r' );
echo "'$my_file'; " . get_class( $my_file ) . "\n" ;
$filereader = fread ( $my_file , 4192);
echo $filereader ;
pclose( $my_file );
?>
Output:
1