How to concatenate a php variable in an echo statement with a javascript onClick event?












0















I am developing an application where each user has a uid and that uid is a folder. I have changed the name of the current directory to the uid and this displays the proper files on a dropdown of the files in the folder that is on the page but then the location still goes to the parent folder and not the the uid folder. How do I concatenate the uid variable with the location so it is going to the right folder? Here is what I have so far



<?php
chdir("$uid");

echo "<select name='menu'>";
$files = array_filter(scandir($dir), function($item) {
return $item[0] !== '.';
});
foreach (glob("*.php") as $file){
if ($file != 'new.php' && $file !='config.php'){
echo "<option value='$file'>".basename($file,".php"). "</option>";
}
}
echo "</select>";
echo "<input type='button' onClick='location=this.form.menu.options[this.form.menu.selectedIndex].value;'
value='GO'>";
echo "</form>";
?>


I have tried doing this:



 echo "<input type='button' onClick='location='$uid/'.this.form.menu.options[this.form.menu.selectedIndex].value;' 
value='GO'>";


But then I run into syntax errors. Is there a way I can concatenate the uid with the location file name?










share|improve this question


















  • 2





    HTML attributes, e.g. onClick, must have their values enclosed within double quotes, e.g. onClick="your_code_goes_here". Your onClick is likely failing because you never added that in. Be sure to enclose the onClick JavaScript in double quotes, remembering to escape those quotes i.e. do onClick="your_code_goes_here". Other problems may or may not exist, but this one would definitely cause a major syntax error.

    – B. Fleming
    Jan 20 at 0:38


















0















I am developing an application where each user has a uid and that uid is a folder. I have changed the name of the current directory to the uid and this displays the proper files on a dropdown of the files in the folder that is on the page but then the location still goes to the parent folder and not the the uid folder. How do I concatenate the uid variable with the location so it is going to the right folder? Here is what I have so far



<?php
chdir("$uid");

echo "<select name='menu'>";
$files = array_filter(scandir($dir), function($item) {
return $item[0] !== '.';
});
foreach (glob("*.php") as $file){
if ($file != 'new.php' && $file !='config.php'){
echo "<option value='$file'>".basename($file,".php"). "</option>";
}
}
echo "</select>";
echo "<input type='button' onClick='location=this.form.menu.options[this.form.menu.selectedIndex].value;'
value='GO'>";
echo "</form>";
?>


I have tried doing this:



 echo "<input type='button' onClick='location='$uid/'.this.form.menu.options[this.form.menu.selectedIndex].value;' 
value='GO'>";


But then I run into syntax errors. Is there a way I can concatenate the uid with the location file name?










share|improve this question


















  • 2





    HTML attributes, e.g. onClick, must have their values enclosed within double quotes, e.g. onClick="your_code_goes_here". Your onClick is likely failing because you never added that in. Be sure to enclose the onClick JavaScript in double quotes, remembering to escape those quotes i.e. do onClick="your_code_goes_here". Other problems may or may not exist, but this one would definitely cause a major syntax error.

    – B. Fleming
    Jan 20 at 0:38
















0












0








0


0






I am developing an application where each user has a uid and that uid is a folder. I have changed the name of the current directory to the uid and this displays the proper files on a dropdown of the files in the folder that is on the page but then the location still goes to the parent folder and not the the uid folder. How do I concatenate the uid variable with the location so it is going to the right folder? Here is what I have so far



<?php
chdir("$uid");

echo "<select name='menu'>";
$files = array_filter(scandir($dir), function($item) {
return $item[0] !== '.';
});
foreach (glob("*.php") as $file){
if ($file != 'new.php' && $file !='config.php'){
echo "<option value='$file'>".basename($file,".php"). "</option>";
}
}
echo "</select>";
echo "<input type='button' onClick='location=this.form.menu.options[this.form.menu.selectedIndex].value;'
value='GO'>";
echo "</form>";
?>


I have tried doing this:



 echo "<input type='button' onClick='location='$uid/'.this.form.menu.options[this.form.menu.selectedIndex].value;' 
value='GO'>";


But then I run into syntax errors. Is there a way I can concatenate the uid with the location file name?










share|improve this question














I am developing an application where each user has a uid and that uid is a folder. I have changed the name of the current directory to the uid and this displays the proper files on a dropdown of the files in the folder that is on the page but then the location still goes to the parent folder and not the the uid folder. How do I concatenate the uid variable with the location so it is going to the right folder? Here is what I have so far



<?php
chdir("$uid");

echo "<select name='menu'>";
$files = array_filter(scandir($dir), function($item) {
return $item[0] !== '.';
});
foreach (glob("*.php") as $file){
if ($file != 'new.php' && $file !='config.php'){
echo "<option value='$file'>".basename($file,".php"). "</option>";
}
}
echo "</select>";
echo "<input type='button' onClick='location=this.form.menu.options[this.form.menu.selectedIndex].value;'
value='GO'>";
echo "</form>";
?>


I have tried doing this:



 echo "<input type='button' onClick='location='$uid/'.this.form.menu.options[this.form.menu.selectedIndex].value;' 
value='GO'>";


But then I run into syntax errors. Is there a way I can concatenate the uid with the location file name?







javascript php html






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asked Jan 20 at 0:18









J DoeJ Doe

124




124








  • 2





    HTML attributes, e.g. onClick, must have their values enclosed within double quotes, e.g. onClick="your_code_goes_here". Your onClick is likely failing because you never added that in. Be sure to enclose the onClick JavaScript in double quotes, remembering to escape those quotes i.e. do onClick="your_code_goes_here". Other problems may or may not exist, but this one would definitely cause a major syntax error.

    – B. Fleming
    Jan 20 at 0:38
















  • 2





    HTML attributes, e.g. onClick, must have their values enclosed within double quotes, e.g. onClick="your_code_goes_here". Your onClick is likely failing because you never added that in. Be sure to enclose the onClick JavaScript in double quotes, remembering to escape those quotes i.e. do onClick="your_code_goes_here". Other problems may or may not exist, but this one would definitely cause a major syntax error.

    – B. Fleming
    Jan 20 at 0:38










2




2





HTML attributes, e.g. onClick, must have their values enclosed within double quotes, e.g. onClick="your_code_goes_here". Your onClick is likely failing because you never added that in. Be sure to enclose the onClick JavaScript in double quotes, remembering to escape those quotes i.e. do onClick="your_code_goes_here". Other problems may or may not exist, but this one would definitely cause a major syntax error.

– B. Fleming
Jan 20 at 0:38







HTML attributes, e.g. onClick, must have their values enclosed within double quotes, e.g. onClick="your_code_goes_here". Your onClick is likely failing because you never added that in. Be sure to enclose the onClick JavaScript in double quotes, remembering to escape those quotes i.e. do onClick="your_code_goes_here". Other problems may or may not exist, but this one would definitely cause a major syntax error.

– B. Fleming
Jan 20 at 0:38














1 Answer
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You can concatenate string in js with "+" operator, while in php you should use "."



So you can try this: (i didn't test it)



echo '<input type="button" onClick="location=''.$uid.'/'+this.form.menu.options[this.form.menu.selectedIndex].value;" value="GO">';





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    You can concatenate string in js with "+" operator, while in php you should use "."



    So you can try this: (i didn't test it)



    echo '<input type="button" onClick="location=''.$uid.'/'+this.form.menu.options[this.form.menu.selectedIndex].value;" value="GO">';





    share|improve this answer




























      0














      You can concatenate string in js with "+" operator, while in php you should use "."



      So you can try this: (i didn't test it)



      echo '<input type="button" onClick="location=''.$uid.'/'+this.form.menu.options[this.form.menu.selectedIndex].value;" value="GO">';





      share|improve this answer


























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        0








        0







        You can concatenate string in js with "+" operator, while in php you should use "."



        So you can try this: (i didn't test it)



        echo '<input type="button" onClick="location=''.$uid.'/'+this.form.menu.options[this.form.menu.selectedIndex].value;" value="GO">';





        share|improve this answer













        You can concatenate string in js with "+" operator, while in php you should use "."



        So you can try this: (i didn't test it)



        echo '<input type="button" onClick="location=''.$uid.'/'+this.form.menu.options[this.form.menu.selectedIndex].value;" value="GO">';






        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Jan 20 at 9:07









        Eko SetiawanEko Setiawan

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