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<script language="php">
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echo("test");
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<?
//ǶÈ뷽ʽ¶þ
echo "<br>test2";
?>
<?php
//ǶÈ뷽ʽÈý
echo "<br>test3";
?>
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//ÕâÀïÊǵ¥ÐÐ×¢ÊÍ
echo "test";
/*
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?>
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<?
$a=1;
function test(){
echo $a;
}
test();    //ÕâÀォ²»ÄÜÊä³ö½á¹û“1”¡£
function test2(){
    global $a;
    echo $a;
}
test2();    //ÕâÑù¿ÉÒÔÊä³ö½á¹û“1”¡£
?>
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<?
//±äÁ¿µÄ±äÁ¿
$a="hello";
$$a="world";
echo "$a $hello";    //½«Êä³ö"hello world"
echo "$a ${$a}";    //ͬÑù½«Êä³ö"hello world"
?>
<?
//±äÁ¿µÄº¯Êý
function func_1(){
  print("test");
}
function fun($callback){
  $callback();
}
fun("func_1");    //ÕâÑù½«Êä³ö"test"
?>
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<?
$a[0]="abc";
$a[1]="def";
$b["foo"]=13;
$a[]="hello";    //$a[2]="hello"
$a[]="world";    //$a[3]="world"
$name[]="jill";    //$name[0]="jill"
$name[]="jack";    //$name[1]="jack"
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$issuetime=date("Y-m-d H:i:s");
$sql="insert into test values("","",...)";
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