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<h1>Examples</h1>
<p class="para">
This example opens a temporary file and writes a test string
to it, then it prints out the content of this file twice.
</p>
<div class="example" id="example-810">
<p><strong>Example #1 Small Zlib Example</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br /><br />$filename </span><span style="color: #007700">= </span><span style="color: #0000BB">tempnam</span><span style="color: #007700">(</span><span style="color: #DD0000">'/tmp'</span><span style="color: #007700">, </span><span style="color: #DD0000">'zlibtest'</span><span style="color: #007700">) . </span><span style="color: #DD0000">'.gz'</span><span style="color: #007700">;<br />echo </span><span style="color: #DD0000">"<html>\n<head></head>\n<body>\n<pre>\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$s </span><span style="color: #007700">= </span><span style="color: #DD0000">"Only a test, test, test, test, test, test, test, test!\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">// open file for writing with maximum compression<br /></span><span style="color: #0000BB">$zp </span><span style="color: #007700">= </span><span style="color: #0000BB">gzopen</span><span style="color: #007700">(</span><span style="color: #0000BB">$filename</span><span style="color: #007700">, </span><span style="color: #DD0000">"w9"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// write string to file<br /></span><span style="color: #0000BB">gzwrite</span><span style="color: #007700">(</span><span style="color: #0000BB">$zp</span><span style="color: #007700">, </span><span style="color: #0000BB">$s</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// close file<br /></span><span style="color: #0000BB">gzclose</span><span style="color: #007700">(</span><span style="color: #0000BB">$zp</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// open file for reading<br /></span><span style="color: #0000BB">$zp </span><span style="color: #007700">= </span><span style="color: #0000BB">gzopen</span><span style="color: #007700">(</span><span style="color: #0000BB">$filename</span><span style="color: #007700">, </span><span style="color: #DD0000">"r"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// read 3 char<br /></span><span style="color: #007700">echo </span><span style="color: #0000BB">gzread</span><span style="color: #007700">(</span><span style="color: #0000BB">$zp</span><span style="color: #007700">, </span><span style="color: #0000BB">3</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// output until end of the file and close it.<br /></span><span style="color: #0000BB">gzpassthru</span><span style="color: #007700">(</span><span style="color: #0000BB">$zp</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">gzclose</span><span style="color: #007700">(</span><span style="color: #0000BB">$zp</span><span style="color: #007700">);<br /><br />echo </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">// open file and print content (the 2nd time).<br /></span><span style="color: #007700">if (</span><span style="color: #0000BB">readgzfile</span><span style="color: #007700">(</span><span style="color: #0000BB">$filename</span><span style="color: #007700">) != </span><span style="color: #0000BB">strlen</span><span style="color: #007700">(</span><span style="color: #0000BB">$s</span><span style="color: #007700">)) {<br /> echo </span><span style="color: #DD0000">"Error with zlib functions!"</span><span style="color: #007700">;<br />}<br /></span><span style="color: #0000BB">unlink</span><span style="color: #007700">(</span><span style="color: #0000BB">$filename</span><span style="color: #007700">);<br />echo </span><span style="color: #DD0000">"</pre>\n</body>\n</html>\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
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