Opening a Process File Pointer with popen() : popen « File Directory « PHP






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Opening a Process File Pointer with popen()

 
Its syntax is: int popen (string command, string mode)

command refers to the system command that will be executed, 
mode refers to how you would use the popen() function to search a file:

<?
    $fh = fopen("data.txt","w");
    fputs($fh, "A\n");
    fputs($fh,"B\n");
    fputs($fh,"C\n");
    fclose($fh);
    $fh =popen("grep B < data.txt", "r");
    fpassthru($fh);
?>








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6.Opening a Unidirectional Pipe Using popen()
7.Redirecting standard output
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