<?php function fa () { return 1; } function fb () { return 1; } function fc () { return 1; } $calla = 'fa'; $callb = 'fb'; $callc = 'fc'; $time = microtime( true ); for( $i = 5000; $i--; ) { $x = 0; $x += $calla(); $x += $callb(); $x += $callc(); if( $x != 3 ) die( 'Bad numbers' ); } echo( "Variable functions took " . (microtime( true ) - $time) . " seconds.<br />" ); $time = microtime( true ); for( $i = 5000; $i--; ) { $x = 0; $x += call_user_func('fa', ''); $x += call_user_func('fb', ''); $x += call_user_func('fc', ''); if( $x != 3 ) die( 'Bad numbers' ); } echo( "call_user_func took " . (microtime( true ) - $time) . " seconds.<br />" ); $time = microtime( true ); for( $i = 5000; $i--; ) { $x = 0; eval( '$x += ' . $calla . '();' ); eval( '$x += ' . $callb . '();' ); eval( '$x += ' . $callc . '();' ); if( $x != 3 ) die( 'Bad numbers' ); } echo( "eval took " . (microtime( true ) - $time) . " seconds.<br />" ); ?>
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