EDIT: Optimization results at end of this question!
hi, i have a following code to first scan files in a specific folder and then read every file line by line and after numerous "if...else if" write new modified file to another folder with the name name as it was when opened.
The problem is that writing a file line by line seems to be awfully slooooow. The default 60 seconds limit will only be enough for 25, or so, files. File sizes vary from 10k to 350k.
Any way to optimize code to make it running faster. Is it better to read line by lines, put every lines into an array and then write that whole array into a new text file (vs. line by line reading/writing). If it is, how it is done in practice.
thanks in advance ----- The code follows -----
<?php
function scandir_recursive($path) {
...
...
}
$fileselection = scandir_recursive('HH_new');
foreach ($fileselection as $extractedArray) {
$tableName = basename($extractedArray); // Table name
$fileLines=file($extractedArray);
foreach ($fileLines as $line) {
if(preg_match('/\(all-in\)/i' , $line)) {
$line = stristr($line, ' (all-in)', true) .', and is all in';
$allin = ', and is all in';
}
else {
$allin = '';
}
if(preg_match('/posts the small blind of \$[\d\.]+/i' , $line)) {
$player = stristr($line, ' posts ', true);
$betValue = substr(stristr($line, '$'), 1);
$bettingMatrix[$player]['betTotal'] = $betValue;
}
else if(preg_match('/posts the big blind of \$[\d\.]+/i' , $line)) {
$player = stristr($line, ' posts ', true);
$betValue = substr(stristr($line, '$'), 1);
$bettingMatrix[$player]['betTotal'] = $betValue;
}
else if(preg_match('/\S+ raises /i' , $line)) {
$player = stristr($line, ' raises ', true);
$betValue = substr(strstr($line, '$'), 1);
$bettingMatrix[$player]['betTotal'] = $betValue; //total bet this hand (shortcut)
}
else if(preg_match('/\S+ bets /i' , $line)) {
$player = stristr($line, ' bets ', true);
$betValue = substr(strstr($line, '$'), 1);
$bettingMatrix[$player]['betTotal'] = $betValue; //total bet this hand (shortcut)
}
else if(preg_match('/\S+ calls /i' , $line)) {
$player = stristr($line, ' calls ', true);
$betValue = substr(stristr($line, '$'), 1);
$callValue = $betValue - $bettingMatrix[$player]['betTotal']; //actual amount called
$bettingMatrix[$player]['betTotal'] = $betValue;
$line = stristr($line, '$', true)."\$".$callValue.$allin;
$allin = '';
}
else if(preg_match('/(\*\*\* (Flop|Turn|River))|(Full Tilt Poker)/i' , $line)) {
unset($bettingMatrix); //zero $betValue
}
else if(preg_match('/\*\*\* FLOP \*\*\*/i' , $line)) {
$flop = substr(stristr($line, '['), 0, -2);
$line = '*** FLOP *** '. $flop;
}
else if(preg_match('/\*\*\* TURN \*\*\*/i' , $line)) {
$turn = substr(stristr($line, '['), 0, -2);
$line = '*** TURN *** '. $flop .' '. $turn;
}
else if(preg_match('/\*\*\* RIVER \*\*\*/i' , $line)) {
$river = substr(stristr($line, '['), 0, -2);
$line = '*** RIVER *** '. substr($flop, 0, -1) .' '. substr($turn, 1) .' '. $river;
}
else {
}
$ourFileHandle = fopen("HH_newest/".$tableName.".txt", 'a') or die("can't open file");
fwrite($ourFileHandle, $line);
fclose($ourFileHandle);
}
}
?>
EDIT: Here's VERY interesting results after rewriting the code based on tips everyone here gave me.
60 text files, 5.8MB total
After all optimization (changed preg->strpos/strstr & $handle before loop): 4 sec.
As above BUT changed strpos/strstr -> stripos/stristr: 8 sec.
As above BUT changed stripos/stristr -> preg: 12 sec.
As above BUT changed fopen inside the loop: 45/60 files after 180sec run limit
Here's the complete script:
$fileselection = scandir_recursive('HH_new');
foreach ($fileselection as $extractedArray) {
$tableName = basename($extractedArray); // Table name
$handle = fopen($extractedArray, 'r');
$ourFileHandle = fopen("HH_newest/".$tableName.".txt", 'a') or die("can't open file");
while ($line = fgets($handle)) {
if (FALSE !== strpos($line, '(all-in)')) {
$line = strstr($line, ' (all-in)', true) .", and is all in
";
$allin = ', and is all in';
} else {
$allin = '';
}
if (FALSE !== strpos($line, ' posts the small blind of $')) {
$player = strstr($line, ' posts ', true);
$betValue = substr(strstr($line, '$'), 1);
$bettingMatrix[$player]['betTotal'] = $betValue;
}
else if (FALSE !== strpos($line, ' posts the big blind of $')) {
$player = strstr($line, ' posts ', true);
$betValue = substr(strstr($line, '$'), 1);
$bettingMatrix[$player]['betTotal'] = $betValue;
}
else if (FALSE !== strpos($line, ' posts $')) {
$player = strstr($line, ' posts ', true);
$betValue = substr(strstr($line, '$'), 1);
$bettingMatrix[$player]['betTotal'] += $betValue;
}
else if (FALSE !== strpos($line, ' raises to $')) {
$player = strstr($line, ' raises ', true);
$betValue = substr(strstr($line, '$'), 1);
$betMade = $betValue - $bettingMatrix[$player]['betTotal']; //actual amount raised by
$bettingMatrix[$player]['betTotal'] = $betValue; //$line contains total bet this hand (shortcut)
}
else if (FALSE !== strpos($line, ' bets $')) {
$player = strstr($line, ' bets ', true);
$betValue = substr(strstr($line, '$'), 1);
$betMade = $betValue - $bettingMatrix[$player]['betTotal']; //actual amount raised by
$bettingMatrix[$player]['betTotal'] = $betValue; //$line contains total bet this hand (shortcut)
}
else if (FALSE !== strpos($line, ' calls $')) {
$player = strstr($line, ' calls ', true);
$betValue = substr(strstr($line, '$'), 1);
$callValue = $betValue - $bettingMatrix[$player]['betTotal']; //actual amount called
$bettingMatrix[$player]['betTotal'] = $betValue;
$line = strstr($line, '$', true)."\$".$callValue.$allin. "
";
$allin = '';
}
else if (FALSE !== strpos($line, '*** FLOP ***')) {
$flop = substr(strstr($line, '['), 0, -2);
unset($bettingMatrix); //zero $betValue
}
else if (FALSE !== strpos($line, '*** TURN ***')) {
$turn = substr(strstr($line, '['), 0, -2);
$line = '*** TURN *** '.$flop.' '.$turn."
";
unset($bettingMatrix); //zero $betValue
}
else if (FALSE !== strpos($line, '*** RIVER ***')) {
$river = substr(strstr($line, '['), 0, -2);
$line = '*** RIVER *** '. substr($flop, 0, -1) .' '. substr($turn, 1) .' '. $river."
";
unset($bettingMatrix); //zero $betValue
}
else if (FALSE !== strpos($line, 'Full Tilt Poker')) {
unset($bettingMatrix); //zero $betValue
}
else {
}
fwrite($ourFileHandle, $line);
}
fclose($handle);
fclose($ourFileHandle);
}
