function.file-put-contents.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>Write a string to a file</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.file-get-contents.html">file_get_contents</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.file.html">file</a></div> <div class="up"><a href="ref.filesystem.html">Filesystem Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.file-put-contents" class="refentry"> <div class="refnamediv"> <h1 class="refname">file_put_contents</h1> <p class="verinfo">(PHP 5)</p><p class="refpurpose"><span class="refname">file_put_contents</span> — <span class="dc-title">Write a string to a file</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">int</span> <span class="methodname"><b><b>file_put_contents</b></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$filename</tt></span> , <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <tt class="parameter">$data</tt></span> [, <span class="methodparam"><span class="type">int</span> <tt class="parameter">$flags</tt></span> [, <span class="methodparam"><span class="type">resource</span> <tt class="parameter">$context</tt></span> ]] )</div> <p class="para rdfs-comment"> This function is identical to calling <a href="function.fopen.html" class="function">fopen()</a>, <a href="function.fwrite.html" class="function">fwrite()</a> and <a href="function.fclose.html" class="function">fclose()</a> successively to write data to a file. </p> <p class="para"> If <i><tt class="parameter">filename</tt></i> does not exist, the file is created. Otherwise, the existing file is overwritten, unless the <b><tt>FILE_APPEND</tt></b> flags is set. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">filename</tt></i></span> <dd> <p class="para"> Path to the file where to write the data. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">data</tt></i></span> <dd> <p class="para"> The data to write. Can be either a <a href="language.types.string.html" class="type string">string</a>, an <a href="language.types.array.html" class="type array">array</a> or a <span class="type stream">stream</span> resource (explained above). </p> <p class="para"> If <i><tt class="parameter">data</tt></i> is a <span class="type stream">stream</span> resource, the remaining buffer of that stream will be copied to the specified file. This is similar with using <a href="function.stream-copy-to-stream.html" class="function">stream_copy_to_stream()</a>. </p> <p class="para"> You can also specify the <i><tt class="parameter">data</tt></i> parameter as a single dimension array. This is equivalent to <i>file_put_contents($filename, implode('', $array))</i>. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">flags</tt></i></span> <dd> <p class="para"> The value of <i><tt class="parameter">flags</tt></i> can be any combination of the following flags (with some restrictions), joined with the binary OR (<i>|</i>) operator. </p> <p class="para"> <table border="5"> <caption><b>Available flags</b></caption> <colgroup> <thead valign="middle"> <tr valign="middle"> <th colspan="1">Flag</th> <th colspan="1">Description</th> </tr> </thead> <tbody valign="middle" class="tbody"> <tr valign="middle"> <td colspan="1" rowspan="1" align="left"> <b><tt>FILE_USE_INCLUDE_PATH</tt></b> </td> <td colspan="1" rowspan="1" align="left"> Search for <i><tt class="parameter">filename</tt></i> in the include directory. See <a href="ini.core.html#ini.include-path" class="link">include_path</a> for more information. </td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left"> <b><tt>FILE_APPEND</tt></b> </td> <td colspan="1" rowspan="1" align="left"> If file <i><tt class="parameter">filename</tt></i> already exists, append the data to the file instead of overwriting it. </td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left"> <b><tt>LOCK_EX</tt></b> </td> <td colspan="1" rowspan="1" align="left"> Acquire an exclusive lock on the file while proceeding to the writing. </td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left"> <b><tt>FILE_TEXT</tt></b> </td> <td colspan="1" rowspan="1" align="left"> <i><tt class="parameter">data</tt></i> is written in text mode. If unicode semantics are enabled, the default encoding is UTF-8. You can specify a different encoding by creating a custom context or by using the <b>stream_default_encoding()</b> to change the default. This flag cannot be used with <b><tt>FILE_BINARY</tt></b>. This flag is only available since PHP 6. </td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left"> <b><tt>FILE_BINARY</tt></b> </td> <td colspan="1" rowspan="1" align="left"> <i><tt class="parameter">data</tt></i> will be written in binary mode. This is the default setting and cannot be used with <b><tt>FILE_TEXT</tt></b>. This flag is only available since PHP 6. </td> </tr> </tbody> </colgroup> </table> </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">context</tt></i></span> <dd> <p class="para"> A valid context resource created with <a href="function.stream-context-create.html" class="function">stream_context_create()</a>. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> The function returns the number of bytes that were written to the file, or <b><tt>FALSE</tt></b> on failure. </p> </div> <div class="refsect1 changelog"> <h3 class="title">ChangeLog</h3> <p class="para"> <table class="informaltable"> <colgroup> <thead valign="middle"> <tr valign="middle"> <th colspan="1">Version</th> <th colspan="1">Description</th> </tr> </thead> <tbody valign="middle" class="tbody"> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">5.0.0</td> <td colspan="1" rowspan="1" align="left"> Added context support </td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">5.1.0</td> <td colspan="1" rowspan="1" align="left"> Added support for <b><tt>LOCK_EX</tt></b> and the ability to pass a stream resource to the <i><tt class="parameter">data</tt></i> parameter </td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">6.0.0</td> <td colspan="1" rowspan="1" align="left"> Added support for the <b><tt>FILE_TEXT</tt></b> and <b><tt>FILE_BINARY</tt></b> flags </td> </tr> </tbody> </colgroup> </table> </p> </div> <div class="refsect1 notes"> <h3 class="title">Notes</h3> <blockquote><p><b class="note">Note</b>: <span class="simpara">This function isbinary-safe.</span></p></blockquote> <div class="tip"><b class="tip">Tip</b><p class="simpara">A URL can be used as afilename with this function if the <a href="filesystem.configuration.html#ini.allow-url-fopen" class="link">fopen wrappers</a> have been enabled.See <a href="function.fopen.html" class="function">fopen()</a> for more details on how to specifythe filename and <a href="wrappers.html" class="xref">List of Supported Protocols/Wrappers</a> for a list of supportedURL protocols.</p></div> </div> <div class="refsect1 seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"><a href="function.fopen.html" class="function" rel="rdfs-seeAlso">fopen()</a></li> <li class="member"><a href="function.fwrite.html" class="function" rel="rdfs-seeAlso">fwrite()</a></li> <li class="member"><a href="function.file-get-contents.html" class="function" rel="rdfs-seeAlso">file_get_contents()</a></li> <li class="member"><a href="function.stream-context-create.html" class="function" rel="rdfs-seeAlso">stream_context_create()</a></li> </ul> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.file-get-contents.html">file_get_contents</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.file.html">file</a></div> <div class="up"><a href="ref.filesystem.html">Filesystem Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>⌨️ 快捷键说明
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