致命错误:我的PHP脚本上允许的内存大小(ams)和内存不足(oom)
我总是会遇到这样的错误:致命错误:我的PHP脚本上允许的内存大小(ams)和内存不足(oom),php,memory,memory-management,allocation,Php,Memory,Memory Management,Allocation,我总是会遇到这样的错误: Fatal Error: Allowed memory size of X bytes exhausted (tried to allocate X bytes) and also Fatal Error: Out of memory (allocated X bytes) (tried to allocate X bytes) 我很困惑,因为这几天(还剩4天)我无法应付。我读了一些关于stackoverflow的建议,但我还是遇到了同样的问题 这是我的代码: &l
Fatal Error: Allowed memory size of X bytes exhausted (tried to allocate X bytes) and also
Fatal Error: Out of memory (allocated X bytes) (tried to allocate X bytes)
我很困惑,因为这几天(还剩4天)我无法应付。我读了一些关于stackoverflow的建议,但我还是遇到了同样的问题
这是我的代码:
<html>
<body>
<?php
$conn = mysqli_connect("localhost","root","","my_trustmovie");
$init = ini_set('memory_limit', '-1');
// global ini_set('memory_limit', '-1');
// ini_get('memory_limit');
// memory_get_usage(true);
//--- FUNCTION **************
function getAllMatrikTrust() {
global $conn;
$mt = array();
$rsrow = mysqli_query($conn,"select * from matrik_trust WHERE connect=1");
$n = mysqli_num_rows($rsrow);
if($n>0) {
while($row = mysqli_fetch_array($rsrow)) {
$mt[$row['row']][$row['column']] = 1;
}
return $mt;
}
return array();
}
function getAllInfoJarak() {
global $conn;
$mt = array();
$rsrow = mysqli_query($conn,"select * from info_jarak");
$n = mysqli_num_rows($rsrow);
if($n>0) {
while($row = mysqli_fetch_array($rsrow)) {
$mt[$row['source']][$row['visited_node']] = $row['jarak'];
}
return $mt;
}
return array();
}
function getAllMatrikEstimatedTrust() {
global $conn;
$mt = array();
$rsrow = mysqli_query($conn,"select * from matrik_estimatedtrust");
$n = mysqli_num_rows($rsrow);
if($n>0) {
while($row = mysqli_fetch_array($rsrow)) {
$mt[$row['row']][$row['column']] = $row['value'];
}
return $mt;
}
return array();
}
function getAllMatrikUserSimilarity() {
global $conn;
$mt = array();
$rsrow = mysqli_query($conn,"select * from matrik_usersimilarity");
$n = mysqli_num_rows($rsrow);
if($n>0) {
while($row = mysqli_fetch_array($rsrow)) {
$mt[$row['row']][$row['column']] = $row['value'];
}
return $mt;
}
return array();
}
// ********************* FURTHER
function getMaxLevel($source) {
global $arrAllInfoJarak;
$mt = array();
foreach($arrAllInfoJarak[$source] as $key => $value) {
array_push($mt,$value);
}
return max($mt);
}
function getNodeByLevel($source,$jarak) {
global $arrAllInfoJarak;
$mt = array();
foreach($arrAllInfoJarak as $source_key => $sourceuser) {
foreach ($sourceuser as $vnode_key => $value){
if($source_key==$source and $value==$jarak) {
array_push($mt,$vnode_key);
}
}
}
return $mt;
}
function getUserSimilarity($row,$column) {
global $arrAllMatrikUserSimilarity;
foreach($arrAllMatrikUserSimilarity[$row] as $key => $value) {
if($key==$column) {
$sim = $value;
}
}
if($sim) {
return $sim;
} else return 0;
}
function getEstimatedTrust($row,$column) {
global $arrAllMatrikEstimatedTrust;
foreach($arrAllMatrikEstimatedTrust[$row] as $key => $value) {
if($key==$column) {
$et = $value;
}
}
if($et) {
return $et;
} else return 0;
}
function getNodeParent($column) {
global $arrAllMatrikTrust;
global $init;
$mt = array();
// ini_set('memory_limit', '-1');
for($i=0;$i<300;$i++) {
if(isset($arrAllMatrikTrust[$i][$column])) {
foreach((array)$arrAllMatrikTrust[$i][$column] as $value) { //<<<--------- ERROR >>>
array_push($mt,$i); //<<<--------- ERROR >>>
}
}
}
return $mt;
}
function calculatePathSim($column) {
// ini_set('memory_limit', '-1');
$nodeP= getNodeParent($column);
$sumPS=0;
if(count($nodeP)>0) { //ada parent
foreach($nodeP as $p) {
$value = getUserSimilarity($p,$column);
if ($value) {
if ($value > 0) {
$sumPS = $sumPS+($value*calculatePathSim($p));
}
}
}
} else {
return 1;
}
return $sumPS;
}
function calculateParentTrust($column,$source,$mTV) {
$nodeP= getNodeParent($column);
$sumPT = 0;
if(count($nodeP)>0) {
foreach($nodeP as $p) {
if($mTV[$source][$p] != 0) {
$value = getUserSimilarity($p,$column);
if ($value) {
if ($value > 0) {
$nodepp = getNodeParent($p); //cek prent2
if (count($nodepp) > 0) {
foreach($nodepp as $pp) {
if(isPathTrust($pp,$source,$mTV)) {
$sumPT = $sumPT + $mTV[$source][$p];
}
}
} else {
$sumPT = $sumPT + $mTV[$source][$p];
}
}
}
}
}
} else {
return 1;
}
return $sumPT;
}
function isPathTrust($column,$source,$mTV) {
$isTrust = true;
if ($mTV[$source][$column] == 0) {
$isTrust = false;
} else {
$nodeP= getNodeParent($column);
if(count($nodeP)>0) { //ada parent
foreach($nodeP as $p) {
$isTrust = $isTrust && isPathTrust($p,$source,$mTV);
}
}
}
return $isTrust;
}
// ===============================================
// MAIN
// ================================================
//Inisialisasi **************
$arrAllMatrikTrust = array();
$arrAllInfoJarak = array();
$arrAllMatrikEstimatedTrust = array();
$arrAllMatrikUserSimilarity = array();
$arrAllMatrikTrust = getAllMatrikTrust();
$arrAllInfoJarak = getAllInfoJarak();
$arrAllMatrikEstimatedTrust = getAllMatrikEstimatedTrust();
$arrAllMatrikUserSimilarity = getAllMatrikUserSimilarity();
//***************************************
$mTV = array();
$uncheck = array();
//00000000000000
$source= 28;
//00000000000000
$jarak=0;
$maxLevel = getMaxLevel($source);
for($i=0;$i<=$maxLevel;$i++) {
$nodeL = getNodeByLevel($source,$i);
foreach($nodeL as $node) {
$sim = getUserSimilarity($source,$node);
if ($sim) {
if ($sim > 0) {
$sumPS = calculatePathSim($node);
$sumPT = calculateParentTrust($node,$source,$mTV);
if ($sumPT > 0) {
$mTV[$source][$node] = $sumPS/$sumPT;
} else {
$mTV[$source][$node] = 0;
}
} else {
array_push($uncheck,$node);
$mTV[$source][$node] = 0;
}
} else {
array_push($uncheck,$node);
$mTV[$source][$node] = 0;
}
}
}
echo "After trust calculation = <br>";
print_r($mTV);
echo "<br><br>";
foreach($uncheck as $node) {
$mTV[$source][$node] = getEstimatedTrust($source,$node);
}
echo "After estimated_trust = <br>";
print_r($mTV);
echo "<br><br>";
//insert db
foreach($mTV[$source] as $key => $value) {
mysqli_query($conn,"INSERT INTO trust_value VALUES ('$source','$key','$value')");
}
?>
</body>
</html>
我在获取数组数据时是否出现了该错误?嗯..那里有90000排。我以前在处理小数据(只有10行)时使用过该代码,效果非常好。所以我不知道这是怎么回事
所有这些都是因为我只使用一个变量来获取数据(在脚本中)而发生的吗?我应该在它们上面添加什么
当这一点清除后,我想我在calculatePathSim
函数中也会遇到同样的错误。因为它也使用getNodeParent
函数。以及之后的所有功能
我的内存是2GB。这意味着我的内存应该超过2GB吗?所以,我将RAM改为4GB,但我仍然得到ams和oom。我是这里的新手,也使用原生PHP。我不知道我现在该怎么办
我希望能得到你们所有人的建议。我需要一些建议。谢谢。这可以通过在脚本顶部添加一行来解决
ini_set("memory_limit","12M");
12M将限制设置为12兆字节(12582912字节)。如果这不起作用,请继续增加内存限制。据我所见,程序的核心输出是
echo "After trust calculation = <br>";
print_r($mTV);
echo "<br><br>";
foreach($uncheck as $node) {
$mTV[$source][$node] = getEstimatedTrust($source,$node);
}
echo "After estimated_trust = <br>";
print_r($mTV);
echo "<br><br>";
//insert db
foreach($mTV[$source] as $key => $value) {
mysqli_query($conn,"INSERT INTO trust_value VALUES ('$source','$key','$value')");
}
echo“信任计算后=
”;
印刷(mTV);
回声“
”;
foreach($node时取消选中){
$mTV[$source][$node]=getEstimatedTrust($source,$node);
}
echo“在估计的信任之后=
”;
印刷(mTV);
回声“
”;
//插入数据库
foreach($mTV[$source]作为$key=>$value){
mysqli_查询($conn,“插入到信任_值(“$source”、“$key”、“$value”)中);
}
也许你的代码重组会奏效。下面的大部分代码都是无效的,它只是一个概念的演示
$query_row_count=5000;
while($query_row_count=5000){
$query_row_count=<get 5000 rows from DB>
<process them and make your arrays>
foreach($mTV[$source] as $key => $value) {
echo "Trust calculation = ".$value.', Estimated trust = ".getEstimatedTrust($value)."<br/>";
mysqli_query($conn,"INSERT INTO trust_value VALUES ('$source','$key','$value')");
}
<not a must, but your could clear those array here xxxarray=null e.t.c.>
}
$query\u row\u count=5000;
而($query\u row\u count=5000){
$query\u行\u计数=
foreach($mTV[$source]作为$key=>$value){
回显“信任计算=“.$value.”,估计信任=“.getEstimatedTrust($value)。”
;
mysqli_查询($conn,“插入到信任_值(“$source”、“$key”、“$value”)中);
}
}
你可以用某种计数器来记录你在哪一行,这样当它再次循环时,你就可以得到下一个5k行甚至在阅读代码之前,你可以给出一个快速的建议。这是因为你在内存中读取和保存了太多的数据,也许你可以尝试像读取5000行->处理前5k行->读取另一个5k行->这样的方法。。。。等等。啊。我希望我能。我不太清楚。嗯,我应该使用变量来保存每个5k数据吗?@jackycheng有什么问题。同样的问题?尝试在php.ini上添加php\u value memory\u limit 128M
$query_row_count=5000;
while($query_row_count=5000){
$query_row_count=<get 5000 rows from DB>
<process them and make your arrays>
foreach($mTV[$source] as $key => $value) {
echo "Trust calculation = ".$value.', Estimated trust = ".getEstimatedTrust($value)."<br/>";
mysqli_query($conn,"INSERT INTO trust_value VALUES ('$source','$key','$value')");
}
<not a must, but your could clear those array here xxxarray=null e.t.c.>
}