PHP getting script runtime _ PHP Tutorial

PHP obtains the script running time. Header (content-type: texthtml; charsetutf-8); microtime-returns the current Unix timestamp and number of microseconds $ oldtimemicrotime (true); echo the script running time:; $ v0; for ($ I

Header ("content-type: text/html; charset = utf-8 ");

// Microtime-returns the current Unix timestamp and number of microseconds

$ Oldtime = microtime (true );

Echo "the script running time is :";

$ V = 0;

For ($ I = 0; I I <100; $ I ++ ){

$ V ++;

}

$ Newtime = microtime (true );

// Obtain the time difference

$ Runtime = $ newtime-$ oldtime;

// Change the timestamp to a string-var_export output or return a string representation of a variable

$ Runtime = var_export ($ runtime );

// Truncates the string substr_count to calculate the number of times the string appears

$ Postion = substr_count ($ runtime, 'E ');

$ Runtime = substr ($ runtime, 0, $ postion-1 );

// Convert the string value to floatfloatval-get the floating point value of the variable

$ Running time = floatval ($ runtime)/1000;

Echo $ runtime. "seconds ";

?>

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