我有一个php页面，内部是这样的警报：
<script>
alert('Stop the timer!');
</script>";
现在我想尝试/做到这一点：
<script>
<?php echo "$test2"; ?>
alert('Stop the timer!');
</script>
（我想做的是通过警报方式退还$ test2的内容...）
现在，这不起作用。但是....它也没有给出错误信息。
所以这里有两个问题：
1）甚至有可能在第2节中放置php的一部分，如果它不起作用，为什么不给出错误消息（3）我必须将$ test2设置为全局吗？（以及如何最好地格式化它）
提前致谢。
<!DOCTYPE html>
<head>
<link rel="stylesheet" href="//code.jquery.com/ui/1.11.4/themes/smoothness/jquery-ui.css">
<script src="//code.jquery.com/jquery-1.10.2.js"></script>
<!-- deze hieronder is nodig voor touchpad enabled sliders -->
<script src="jquery.ui.touch-punch.min.js"></script>
<script src="//code.jquery.com/ui/1.11.4/jquery-ui.js"></script>
<link rel="stylesheet" href="/resources/demos/style.css">
<script>
function getSelectValues(select) {
var result = [];
var options = select && select.options;
var opt;
for (var i=0, iLen=options.length; i<iLen; i++) {
opt = options[i];
if (opt.selected) {
result.push(opt.value || opt.text);
}
}
return result;
}
</script>
<!-- accordion -->
<script>
$(function() {
$( "#accordion" ).accordion({
event: "click",
active: false,
collapsible: true,
autoHeight: false
});
});
</script>
<script>
$(function() {
$( "#slider-vertical" ).slider({
orientation: "horizontal",
range: "min",
min: 0,
max: 100,
value: 1,
slide: function( event, ui ) {
$( "#amount" ).val( ui.value );
}
});
$( "#amount" ).val( $( "#slider-vertical" ).slider( "value" ) );
});
</script>
<script>
$(function() {
$( "#slider-vertical2" ).slider({
orientation: "horizontal",
range: "min",
min: 0,
max: 100,
value: 1,
slide: function( event, ui ) {
$( "#amount2" ).val( ui.value );
}
});
$( "#amount2" ).val( $( "#slider-vertical2" ).slider( "value" ) );
});
</script>
<title>Left X Right -BrainGame</title>
<!-- Bootstrap -->
<link href="css/bootstrap.css" rel="stylesheet">
<script src="js/bootstrap.min.js"></script>
<script>
$(function() {
$( "#datepicker" ).datepicker();
});
</script>
<script>
$(".js-example-basic-multiple").select2(); </script>
<style type="text/css">
p.label_checkbox_pair {
clear: both;
float: none;
position: relative;
}
p.label_checkbox_pair input {
left: 80px;
position: absolute;
top: 1px;
}
p.label_checkbox_pair label {
display: block;
margin-left: 90px;
width: 200px;
}
</style>
<script src="js/icheck.js"></script>
<script>
//oud $(document).ready(function(){
//$('input').iCheck({
//checkboxClass: 'icheckbox_polaris',
//radioClass: 'iradio_polaris',
//
//increaseArea: '20%' optional
//});
//});
$(document).ready(function(){
$('input').each(function(){
var self = $(this),
label = self.next(),
label_text = label.text();
label.remove();
self.iCheck({
checkboxClass: 'icheckbox_line-blue',
radioClass: 'iradio_line-blue',
insert: '<div class="icheck_line-icon"></div>' + label_text
});
});
});
</script>
<link href="skins/line/blue.css" rel="stylesheet">
</head>
<BODY>
<br /><br />
<table HSPACE="50" CELLPADDING="20">
<tr HSPACE=50 CELLPADDING="30">
<td>
<?php
$a=array("red","blue","black","orange","green");
$random_keys=array_rand($a,5);
$textcolours=array('red','blue','black','orange','green');
shuffle($textcolours);
echo "<right><font size=6 color='$textcolours[0]' >".$a[$random_keys[0]]."<br><br></font></right>";
echo "<right><font size=6 color='$textcolours[1]' >".$a[$random_keys[1]]."<br><br></font></right>";
echo "<right><font size=6 color='$textcolours[2]' >".$a[$random_keys[2]]."<br><br></font></right>";
echo "<right><font size=6 color='$textcolours[3]' >".$a[$random_keys[3]]."<br><br></font></rightr>";
echo "<right><font size=6 color='$textcolours[4]' >".$a[$random_keys[4]]."<br><br></font></right>";
?>
</td>
<td>
<div class="left">
<form class="span4" action="" method="post">
<fieldset>
<legend>Left X Right BrainGame</legend>
<p halign="right" margin="10px">Name: <input type="text" name="naam" ></p>
<p halign="right" margin="10px">Date: <input type="text" name="date" id="datepicker" ></p>
<br>
<?php
if(isset($_POST['getdata'])){
$conn=mysql_connect('localhost','t','w');
mysql_select_db("test",$conn);
$regexp = "/^[^0-9][A-z0-9_]+([.][A-z0-9_]+)*[@][A-z0-9_]+([.][A-z0-9_]+)*[.][A-z]{2,4}$/";
$naam=$_POST['naam'];
$date=$_POST['date'];
//$type=$_POST['type'];
//$core=$_POST['core'];
//$management=$_POST['management'];
//$names = $tools;
//$output = preg_grep('/(Andrew|John)/i', $names);
//print_r( $output );
//
//http://webcheatsheet.com/php/regular_expressions.php#match
$test = $_POST['tools'];
$result = preg_replace('/({|:|true|}|")/', '', $test);
$test2 = preg_grep('/(^RED|^BLACK|^BLUE|^ORANGE|^GREEN|^red|^black|^blue|^orange|^green)/i', $result);
$tools = json_encode($test2);
//$tools = $_POST['tools'];
//$tools = json_encode(preg_grep('/(RED|BLACK|BLUE|ORANGE|GREEN)/i', $_POST['tools']));
//$tools = json_encode($_POST['tools']);
//$analytisch=$_POST['analytisch'];
//$eneagram=$_POST['eneagram'];
if(true == false ){
echo "<label class='err'>All fields are required</label>";
}
else{
$insert="Insert into kandidaat(naam,date,tools)
values('".$naam."','".$date."','".$tools."')";
$rs=mysql_query($insert) or die(mysql_error());
?>
<script>
<?php echo "$test2"; ?>
alert('Stop the timer!');
</script>";
<?php }
}
?>
</fieldset>
<div id="accordion" style="width:90%;">
<h3>Start...</h3>
<div>
<p class="label_checkbox_pair">
<!--<div style="font-family: arial; font-size: 6px; color: #0B1DE0; vertical-align: middle;"><input style="vertical-align: middle" type="checkbox" name="iCheck" value="true"><label for="certs">ISTQB2</label></div>-->
<div style="font-family: arial; font-size: 6px; color: #0B1DE0; vertical-align: middle;"><input style="vertical-align: middle" type="checkbox" name="certs[RED]" value="true"><label>RED</label></div>
<div style="font-family: arial; font-size: 6px; color: #0B1DE0; vertical-align: middle;"><input style="vertical-align: middle" type="checkbox" name="certs[BLUE]" value="true"><label>BLUE</label></div>
<div style="font-family: arial; font-size: 6px; color: #0B1DE0; vertical-align: middle;"><input style="vertical-align: middle" type="checkbox" name="certs[BLACK]" value="true"><label>BLACK</label></div>
<div style="font-family: arial; font-size: 6px; color: #0B1DE0; vertical-align: middle;"><input style="vertical-align: middle" type="checkbox" name="certs[ORANGE]" value="true"><label>ORANGE</label></div>
<div style="font-family: arial; font-size: 6px; color: #0B1DE0; vertical-align: middle;"><input style="vertical-align: middle" type="checkbox" name="certs[GREEN]" value="true"><label>GREEN</label></div>
</p>
</div>
<h3>Part 2</h3>
<div>
<p>
<!-- zie content website https://select2.github.io/examples.html -->
<fieldset>
<div><input type="checkbox" name="tools[RED]" value="true"><label>RED</label></div>
<div><input type="checkbox" name="tools[BLUE]" value="true"><label>BLUE</label></div>
<div><input type="checkbox" name="tools[BLACK]" value="true"><label>BLACK</label></div>
<div><input type="checkbox" name="tools[ORANGE]" value="true"><label>ORANGE</label></div>
<div><input type="checkbox" name="tools[GREEN]" value="true"><label>GREEN</label></div>
</fieldset>
</p>
</div>
</div>
<br/> <button type="submit" name="getdata" class="btn">Submit</button>
<a href="toonkandidaat.php" class="btn btn-primary">Highscores</a>
</form>
</div>
<?php
function save(){
}
?>
<?php
function make_links_clickable($text){
return preg_replace('!(((f|ht)tp(s)?://)[-a-zA-Zа-яА-Я()0-9@:%_+.~#?&;//=]+)!i', '<a href="$1">$1</a>', $text);
}
?>
</td>
</tr>
</table>
</body>
</html>
您的语法错误。想象一下，您已将foobar保存在变量中。如果像您一样打印，结果将是foobar
但是您将其打印在脚本部分内部，因此需要将其分配给JavaScript变量。有两种可能性来提醒它。
alert("<?php echo $test; ?>");
或者
var content = "<?php echo $test; ?>";
alert(content);
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