Because I'm bored, I decided to test the theory.
AMD 3200xp 1.5gb Memory RHEL AS 3
I ran the test 20 times, and 18 of those times, double quotes were faster than single quotes. Don't always trust what you read. Not to mention the fact that the 'faster' of the two was 'faster' by an average of less than .003 seconds to include 1000 files.
<?php
function microtime_float() {
list ( $usec, $sec ) = explode ( " ", microtime() );
return ( ( float ) $usec + ( float ) $sec );
}for ( $i = 0; $i < 1000; $i++ ) {
$fp = fopen ( "file_" . $i . ".php", "w" );
fwrite ( $fp, "<?php\n\n\n?>" );
fclose ( $fp );
}$single_start = microtime_float();
for ( $i = 0; $i < 1000; $i++ ) {
include ( 'file_' . $i . '.php' );
}
$single_end = microtime_float();$double_start = microtime_float();
for ( $i = 0; $i < 1000; $i++ ) {
include ( "file_" . $i . ".php" );
}
$double_end = microtime_float();$single = $single_end - $single_start; $double = $double_end - $double_start;
echo ( "Single Quotes : " . $single . " seconds.<br />\n" ); echo ( "Double Quotes : " . $double . " seconds.<br /><br />\n" );
if ( $double > $single ) {
$time = $double - $single;
echo ( "Single Quotes are " . $time . " seconds faster than double quotes." );
} else {
$time = $single - $double;
echo ( "Double Quotes are " . $time . " seconds faster than single quotes." );
}
?>
-- John C. Nichel ÜberGeek KegWorks.com 716.856.9675 [EMAIL PROTECTED]
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