如何使用fwrite将变量作为字符串写入外部文件 - 在变量周围使用单引号'（var）'：
$sql_data_element = "UPDATE artister SET data_two="$data_two" WHERE brugernavn= ' . $brugernavn . '";
编写data_two =“$ data_two”会出错 - 需要正确的转义才能工作......
将完整代码写入外部文件：
$file = fopen($dir . '/' . $file_to_write,"w");
$template_content = '
<article class="text" style="display:block">
<div class="wrap_om_artisten_top clearfix"> <!-- CLEAR FLOATS I wrap_profile_image OG data_elements_upload_section -->
<!-- PROFIL FOTO -->
<div class="wrap_profile_image">
<figure class="profile_image">
<!-- PROFIL FOTO HER -->
</figure>
<div class="wrap_form_image">
<form enctype="multipart/form-data" method="post" class="form_img_profile">
<input type="file" name="img_profile_upload" id="img_profile_upload" style="display:none;" accept="image/*" />
<label for="img_profile_upload" class="choose_profile_img button">Vælg billede</label>
<!-- LABEL: OMGÅ BROWSER DEFAULT-TEXT: "Ingen fil valgt." -->
<input id="submit" type="submit" name="submit_image_profile" value="Tilføj foto" class="submit_img_upload button">
</form>
</div>
</div>
<!-- INOF -->
<div class="data_elements_upload_section">
<!-- INDSÆT DATA ELEMENT I MYSQL -->
<?php
$conn = new mysqli(DB_HOST, DB_USER, DB_PASS, DB_NAME);
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
} else {
//echo("ja conn ok <br />");
}
// HVIS DER ER INDTASTET NOGET ("isset") I FORM INPUT...
$data_one = isset($_POST["data_one"]) ? $_POST["data_one"] : "";
$data_two = isset($_POST["data_two"]) ? $_POST["data_two"] : "";
$data_three = isset($_POST["data_three"]) ? $_POST["data_three"] : "";
// ERRORS
function show_error_data($error_text) {
echo \'<div class="error_overlay"> \n\';
echo \'<div class="error_text_wrap"> \n\';
echo \'<p class="error_text">$error_text</p>\'; // HUSK FORSKEL PÅ ENKELT - OG DOBBELT
echo \'<button class="error_close">Prøv igen</button> \n\';
echo \'</div> \n\';
echo \'</div>\';
}
// HVIS FORM SUBMIT ER TRYKKKET...
if (isset($_POST["submit_data_one"])) {
// BESTEM HVOR OG HVAD DER SKLA INDSÆTTES
$sql_data_element = "UPDATE artister SET data_one='\$data_one' WHERE brugernavn= \'' . $brugernavn . '\'";
//INDSÆT INDTASTEDE DATA I MYSQL
$conn -> query($sql_data_element);
}
else if (isset($_POST["submit_data_two"])) {
if (empty($_POST["data_one"])) { // HVIS data_one ER TOM..
show_error_data("Udyld Info 1 først!");
} else {
$sql_data_element = "UPDATE artister SET data_two="$data_two" WHERE brugernavn= ' . $brugernavn . '";
$conn -> query($sql_data_element);
}
} // END OF submit_data_two
else if (isset($_POST["submit_data_three"])) {
if ( (empty($_POST["data_one"])) || (empty($_POST["data_two"])) ) {
show_error_data("Udyld Info 1 og 2 først!");
} else {
$sql_data_element = "UPDATE artister SET data_three="$data_three" WHERE brugernavn= ' . $brugernavn . '";
$conn -> query($sql_data_element);
}
} // END OF submit_data_three
?>
<aside class="wrap_data_elements">
<!-- <button type="button" class="wrap_close_text">
<img src="/images/slideren/icons/icon_close_fullscreen.png" class="close_text"
alt="Skjul informationer om kunsteneren og vend tilbage til visning af kunsteksemksempler" />
</button>-->
<div class="data_element">
<h1>' . $brugernavn . '</h1>
</div>
<div class="data_element">
<?php
$query = "SELECT data_one FROM artister WHERE brugernavn = ' . $brugernavn . '";
$result = mysqli_query($conn,$query) or die (mysqli_error($conn) );
while($row = mysqli_fetch_array($result)) {
$data_one = $row["data_one"];
echo $data_one;
}
?>
</div>
<div class="data_element">
<?php
$query = "SELECT data_two FROM artister WHERE brugernavn = ' . $brugernavn . '";
$result = mysqli_query($conn,$query) or die (mysqli_error($conn) );
while($row = mysqli_fetch_array($result)) {
$data_two = $row["data_two"];
echo $data_two;
}
?>
</div>
<div class="data_element">
<?php
$query = "SELECT data_three FROM artister WHERE brugernavn = ' . $brugernavn . '";
$result = mysqli_query($conn,$query) or die (mysqli_error($conn) );
while($row = mysqli_fetch_array($result)) {
$data_three = $row["data_three"];
echo $data_three;
}
?>
</div>
<!--<ul class="wrap_se_mere">
<li class="overskrift_se_mere">DENNE KUNSTNER HAR MERE</li>
<ul class="second_se_mere">
<li class="se_mere">MUSIK</li>
<li class="se_mere">kunst</li>
<li class="se_mere">FILM</li>
</ul>
</li>
</ul> -->
</aside>
<div class="wrap_form_data">
<button class="show_form_data button">Opret info</button>
<!-- OPRET DATA ELEMENT 1 -->
<form action="<?=$_SERVER["PHP_SELF"]?>" method="post" class="form_data_element">
<input type="text" name="data_one" placeholder="Data 1" class="data_input"/>
<input type="submit" name="submit_data_one" class="submit_data button" value="Opret data 1" />
</form>
<!-- OPRET DATA ELEMENT 2 -->
<form action="<?=$_SERVER["PHP_SELF"]?>" method="post" class="form_data_element">
<input type="text" name="data_two" placeholder="Data 2" class="data_input"/>
<input type="submit" name="submit_data_two" class="submit_data button" value="Opret data 2" />
</form>
<!-- OPRET DATA ELEMENT 3 -->
<form action="<?=$_SERVER["PHP_SELF"]?>" method="post" class="form_data_element">
<input type="text" name="data_three" placeholder="Data 3" class="data_input"/>
<input type="submit" name="submit_data_three" class="submit_data button" value="Opret data 3" />
</form>
<button class="cancel_data button"></button>
</div>
</div> <!-- end of data_elements_upload_section -->
</div> <!-- END OF wrap_om_artisten_top -->
<!-- VIS BESKRIVELSE -->
<div class="wrap_om_artisten_bottom_broedtekst">
<?php
$conn = new mysqli(DB_HOST, DB_USER, DB_PASS, DB_NAME);
$query = "SELECT beskrivelse FROM artister WHERE brugernavn = \'' . $brugernavn . '\' ";
$result = mysqli_query($conn,$query) or die (mysqli_error() );
while($row = mysqli_fetch_array($result)) {
$beskrivelse = $row["beskrivelse"];
echo $beskrivelse;
}
?>
</div> <!-- END OF wrap_om_artisten_bottom_broedtekst -->
<!-- OPRET BESKRIVELSE -->
<form action="<?=$_SERVER["PHP_SELF"]?>" method="post" class="form_beskrivelse">
<label>Beskrivelse:</label>
<textarea id="editor1" name="beskrivelse" placeholder="Beskrivelse her"
value="<?php echo isset($_POST["beskrivelse"]) ? $_POST["beskrivelse"] : ""; // UPLOAD TEXT TIL MYSQL ?>">
<?php echo $beskrivelse; // VIS OG EDIT EKSISTERENDE MYSQL-TEXT ?>
</textarea>
<script>
// VIS ckeDITOREN
CKEDITOR.replace( "editor1" );
</script>
<br />
<input type="submit" name="submit_beskrivelse" value="Opret beskrivelse" />
</form>
<!-- ART UPLOADS -->
<div class="wrap_uploads" >
<?php
include ("links_art_uploads.php");
?>
</div>
<div class="upload_section">
<form id="Upload" action="" enctype="multipart/form-data" method="post">
<p>
<label>Upload et billede:</label>
<!-- TYPE file FINDER IMG LOCATION - id + CCS-STYLE + button MED JS ER HER FOR AT OMG? BROWSER-DEFAULT TEXTEN: "Ingen fil valgt." -->
<input type="file" name="img_art_upload" id="img_art_upload" style="display:none;"
accept="image/*" onchange="showMyImage(this)"/> <!-- TIL PREVIEW - SE script function showMyImage OG body <input type="file"... -->
<button type="button" class="input_style button" onClick="document.getElementById("img_art_upload").click();">Vælg billede</button>
</p>
<p>
<label>Skift navn på billede</label>
<input type="text" name="img_nyt_navn" maxlength="26" />
</p>
<p>
<label>Press to...</label>
<input id="submit" type="submit" name="submit_art_upload" class="button" value="Upload">
</p>
</form>
</div>
<!-- <div class="preview_wrap"style="position: absolute; bottom: 0; border: 2px solid red;">
<img id="preview" class="preview_size"/> <!-- TIL PREVIEW - SE script og <input type="file"... -->
</div>-->
<!-- vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv -->
<script src="http://code.jquery.com/jquery-1.11.3.min.js"></script>
<script>
$(document).ready(function(){
// PROFIL FOTO - HENT OG VIS FRA ROOT
$("figure.profile_image").load("links_to_uploads_template.php");
// PROFIL FOTO - TOGGLE BUTTONS
$("label.choose_profile_img").click(function() {
$(this).hide();
$("input.submit_img_upload").fadeIn(400);
$("body").css({"background" : "black" });
});
// TIL UPLOAD AF SATA
$("form.form_data_element").hide();
$("button.show_form_data").click(function() {
$(this).hide();
$("form.form_data_element:nth-of-type(1)").fadeIn(400);
$("form.form_data_element:nth-of-type(2)").fadeIn(400);
$("form.form_data_element:nth-of-type(3)").fadeIn(400);
});
$("form.form_data_element").click(function() {
$("form.form_data_element").not(this).hide();
$(this).css({"float" : "left"}); // KUN NØDVENDIG PGA FOMM 3 SOM FLOATER RIGHT - HVILKET PALCERER button.cancel_data YDERST TIL VENSTRE
$(this).css({"width" : "calc(100% - 30px)"}); // BREDDE FORM MINUS BREDDEN AF button.cancel_data 30PX
$(this).find("input.data_input").css({"float" : "left", "width" : "calc(100% - 120px)"}); // BREDDE MINUS input.submit_data
$(this).find("input.submit_data").fadeIn(400);
$("button.cancel_data").fadeIn(400);
});
$("button.cancel_data").click(function() {
$("button.show_form_data").fadeIn(400);
$(this).hide();
$("form.form_data_element").removeAttr("style").hide();
$("input.data_input").removeAttr("style");
$("input.submit_data").removeAttr("style");
});
var half_height = $(window).height() / 2;
$("button.next_image").click(function() {
var viewport_height = $(window).height(); // OGSÅ DEFINERET I custom_fullscreen.js
var next_image = $(this).next(".window_element").outerHeight(true); // HØJDE + MARGIN + PADDING
$("html, body").animate({
// scrollTop: $(".top_img").offset().top - ( $(window).height() - $(".top_img").outerHeight(true) ) / 2
scrollTop: $(".top_img").offset().top - ( viewport_height - next_image ) / 2
}, 1000, "swing");
});
//var position = $(".window_element").offset(); /*it gets the position of the div
// "fixed" relative to the document*/
//$(".window_element").html(position.top);
}); // END OF DOC READY
</script>
</article> <!-- END OF article class="text" -->
'; // END OG HTML
fwrite($file, $template_content);
fclose($file);
编写外部文件后，HTML必须如下：
$sql_data_element = "UPDATE artister SET data_one='$data_one' WHERE username='new user' ";
这是关于什么的：在向MySql提交用户名，密码后，“index.php”会从$template_content写入一个新文件并重定向到此文件。基于新文件的书面内容，用户有更多选择。
答案 0 :(得分：1)
注意您的引用字符并使用heredoc以提高可读性：
<?php
$username = 'James Bond';
$template_content = <<<CODE
\$sql_data_element = "UPDATE artister SET data_one='\$data_one' WHERE username='$username'";
CODE;
var_dump($template_content);
上面的输出显然是：
string(91) "$sql_data_element = "UPDATE artister SET data_one='$data_one' WHERE username='James Bond'";"
答案 1 :(得分：0)
$template_content = '$sql_data_element = "UPDATE artister SET data_one="\'$data_one\'" WHERE username= \'' . $username . '\'";';
将输出
$sql_data_element = "UPDATE artister SET data_one='$data_one' WHERE username='new user' ";
按照您的要求
您确定不想输出
$sql_data_element = "UPDATE artister SET data_one='some value' WHERE username='new user' ";？