无法在php print中获得JavaScript变量的正确语法
[英]Can't get right syntax for JavaScript variables inside php print
问题描述
What is wrong with the following code, that I produced for testing the content of the button? 
我为测试按钮内容而生成的以下代码有什么问题？
I get the syntax error "unexpected T_CONSTANT_ENCAPSED_STRING" 我得到语法错误“意外T_CONSTANT_ENCAPSED_STRING”
<?php /* Created on: 14-9-2013 */ ?>
<html>
<head>
<script type="text/javascript" charset="utf-8">
var mldkr = Math.round(screen.availWidth/2.08);
var supro = Math.round((screen.availHeight)/6), alto=supro*4
var urlesp = "http://translate.google.com/#<?php echo $fontLingvo ?>|eo|<?php echo $fontVorto ?>";
</script>
</head>
<body>
<table>
<?php
print '
<tr height="30">
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td align="right">
<button type="button" onclick="fenEspo = window.open(urlesp, '', 'toolbar=0, location=0, directories=0, menuBar=0, scrollbars=1, resizable=1, height='+alto+', top='+supro+', left='+mldkr+', width='+mldkr, true)" title="Ne gravas, ne kalkuliĝas por la statistiko.">Kaj kion donas Gugl Trenslejt kiel<br />traduko(j)n por Esperanto?</button>
</td>
<td align="center">
<input type="radio" name="eo" value="1" />jes
<input type="radio" name="eo" value="0" />ne
<input type="radio" name="eo" value="-1" disabled="disabled" /><font size="-3">ne aferkoncerna</font>
</td>
</tr>
'
?>
</table>
</body>
</html>
Thank you! 谢谢！
4 个解决方案
解决方案1
1 2013-09-14 09:17:26
If you want to use ' inside of ' , you got to escape them. 如果你想使用'内部' ，你必须逃避它们。
// "usual" string
$foo = 'abc';
// string with ' as content
$bar = ' abc \' def ';
In your example, have a look at the call to window.open() . 在您的示例中，查看对window.open()的调用。
<?php
print '
<tr height="30">
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td align="right">
<button type="button" onclick="fenEspo = window.open(urlesp, \'\', \'toolbar=0, location=0, directories=0, menuBar=0, scrollbars=1, resizable=1, height='+alto+', top='+supro+', left='+mldkr+', width='+mldkr+', true)" title="Ne gravas, ne kalkuliĝas por la statistiko.">Kaj kion donas Gugl Trenslejt kiel<br />traduko(j)n por Esperanto?</button>
</td>
<td align="center">
<input type="radio" name="eo" value="1" />jes
<input type="radio" name="eo" value="0" />ne
<input type="radio" name="eo" value="-1" disabled="disabled" /><font size="-3">ne aferkoncerna</font>
</td>
</tr>
';
?>
For a cleaner code base you should move that code to a separate function in your already existing <script> tag and just reference this in the button. 为了更清晰的代码库，您应该将该代码移动到现有<script>标记中的单独函数中，并在按钮中引用它。 (or add the event using addEventListener() in JavaScript) （或在JavaScript中使用addEventListener()添加事件）
解决方案2
1 2013-09-14 09:18:05
Your quotes are not properly escaped. 您的报价未正确转义。 There are several ways to fix this. 有几种方法可以解决这个问题。
Heredoc: 定界符：
print <<<EOT
<tr height="30">
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td align="right">
<button type="button" onclick="fenEspo = window.open(urlesp, \'\', \'toolbar=0, location=0, directories=0, menuBar=0, scrollbars=1, resizable=1, height=\'+alto+\', top=\'+supro+\', left=\'+mldkr+\', width=\'+mldkr, true)" title="Ne gravas, ne kalkuliĝas por la statistiko.">Kaj kion donas Gugl Trenslejt kiel<br />traduko(j)n por Esperanto?</button>
</td>
<td align="center">
<input type="radio" name="eo" value="1" />jes
<input type="radio" name="eo" value="0" />ne
<input type="radio" name="eo" value="-1" disabled="disabled" /><font size="-3">ne aferkoncerna</font>
</td>
</tr>
EOT;
Escaping: 转义：
print '
<tr height="30">
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td align="right">
<button type="button" onclick="fenEspo = window.open(urlesp, \'\', \'toolbar=0, location=0, directories=0, menuBar=0, scrollbars=1, resizable=1, height=\'+alto+\', top=\'+supro+\', left=\'+mldkr+\', width=\'+mldkr, true)" title="Ne gravas, ne kalkuliĝas por la statistiko.">Kaj kion donas Gugl Trenslejt kiel<br />traduko(j)n por Esperanto?</button>
</td>
<td align="center">
<input type="radio" name="eo" value="1" />jes
<input type="radio" name="eo" value="0" />ne
<input type="radio" name="eo" value="-1" disabled="disabled" /><font size="-3">ne aferkoncerna</font>
</td>
</tr>
';
解决方案3
0 2013-09-14 09:18:15
you have an extra ' before toolbar=0 'toolbar=0 你有一个额外的' toolbar=0 'toolbar=0
remove and it should be fine 删除它应该没问题
解决方案4
0 2013-09-14 09:22:43
You need to escape the double quote as: \\" instead of "" 您需要将双引号转义为： \\"而不是""
An un-escaped " will prematurely terminate the string. 未逃脱的"将过早地终止字符串。
Example: 例：
This is incorrect: "k " is a double quote" 这是不正确的： "k " is a double quote"
This is correct: "k \\" is a double quote" 这是正确的： "k \\" is a double quote"
声明:本站的技术帖子网页，遵循CC BY-SA 4.0协议，如果您需要转载，请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.