{"type":"rich","version":"1.0","provider_name":"phorkie","provider_url":"https:\/\/p.cweiske.de\/","title":"php pcntl forking","author_name":"Christian Weiske","cache_age":86400,"width":900,"height":900,"html":"<!-- embedding all files of https:\/\/p.cweiske.de\/151 -->\n<link rel=\"stylesheet\" href=\"https:\/\/p.cweiske.de\/css\/embed.css\"\/>\n<div class=\"phork\" id=\"151\">\n    <div class=\"phork-file\">\n <div class=\"phork-content\">\n  <style type=\"text\/css\">\/**\n * GeSHi (C) 2004 - 2007 Nigel McNie, 2007 - 2008 Benny Baumann\n * (http:\/\/qbnz.com\/highlighter\/ and http:\/\/geshi.org\/)\n *\/\n.php .de1, .php .de2 {font: normal normal 1em\/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;}\n.php  {font-family:monospace;}\n.php .imp {font-weight: bold; color: red;}\n.php li, .php .li1 {color: #DDD;}\n.php .ln {width:1px;text-align:right;margin:0;padding:0 2px;vertical-align:top;}\n.php .kw1 {color: #b1b100;}\n.php .kw2 {color: #000000; font-weight: bold;}\n.php .kw3 {color: #990000;}\n.php .kw4 {color: #009900; 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}\n<\/style><div class=\"code\"><table class=\"php\"><tbody><tr class=\"li1\"><td class=\"ln\"><pre class=\"de1\">1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n<\/pre><\/td><td class=\"de1\"><pre class=\"de1\"><span class=\"kw2\">&lt;?php<\/span>\n<span class=\"re0\">$pid<\/span> <span class=\"sy0\">=<\/span> pcntl_fork<span class=\"br0\">&#40;<\/span><span class=\"br0\">&#41;<\/span><span class=\"sy0\">;<\/span>\n<span class=\"kw1\">if<\/span> <span class=\"br0\">&#40;<\/span><span class=\"re0\">$pid<\/span> <span class=\"sy0\">==<\/span> <span class=\"sy0\">-<\/span><span class=\"nu0\">1<\/span><span class=\"br0\">&#41;<\/span> <span class=\"br0\">&#123;<\/span>\n&#160; &#160; <a href=\"http:\/\/www.php.net\/die\"><span class=\"kw3\">die<\/span><\/a><span class=\"br0\">&#40;<\/span><span class=\"st_h\">'could not fork'<\/span><span class=\"br0\">&#41;<\/span><span class=\"sy0\">;<\/span>\n<span class=\"br0\">&#125;<\/span> <span class=\"kw1\">else<\/span> <span class=\"kw1\">if<\/span> <span class=\"br0\">&#40;<\/span><span class=\"re0\">$pid<\/span><span class=\"br0\">&#41;<\/span> <span class=\"br0\">&#123;<\/span>\n&#160; &#160; <span class=\"kw1\">echo<\/span> <span class=\"st0\">&quot;forked<span class=\"es1\">\\n<\/span>&quot;<\/span><span class=\"sy0\">;<\/span>\n&#160; &#160; <span class=\"co1\">\/\/ we are the parent<\/span>\n&#160; &#160; <span class=\"re0\">$start<\/span> <span class=\"sy0\">=<\/span> <a href=\"http:\/\/www.php.net\/time\"><span class=\"kw3\">time<\/span><\/a><span class=\"br0\">&#40;<\/span><span class=\"br0\">&#41;<\/span><span class=\"sy0\">;<\/span>\n&#160; &#160; <span class=\"re0\">$exited<\/span> <span class=\"sy0\">=<\/span> <span class=\"kw4\">false<\/span><span class=\"sy0\">;<\/span>\n&#160; &#160; <span class=\"kw1\">do<\/span> <span class=\"br0\">&#123;<\/span>\n&#160; &#160; &#160; &#160; <a href=\"http:\/\/www.php.net\/sleep\"><span class=\"kw3\">sleep<\/span><\/a><span class=\"br0\">&#40;<\/span><span class=\"nu0\">1<\/span><span class=\"br0\">&#41;<\/span><span class=\"sy0\">;<\/span>\n&#160; &#160; &#160; &#160; <span class=\"kw1\">echo<\/span> <span class=\"st0\">&quot;check child status pid <span class=\"es4\">$pid<\/span><span class=\"es1\">\\n<\/span>&quot;<\/span><span class=\"sy0\">;<\/span>\n&#160; &#160; &#160; &#160; <span class=\"re0\">$ret<\/span> <span class=\"sy0\">=<\/span> pcntl_waitpid<span class=\"br0\">&#40;<\/span><span class=\"re0\">$pid<\/span><span class=\"sy0\">,<\/span> <span class=\"re0\">$status<\/span><span class=\"sy0\">,<\/span> WNOHANG <span class=\"sy0\">|<\/span> WUNTRACED<span class=\"br0\">&#41;<\/span><span class=\"sy0\">;<\/span>\n&#160; &#160; &#160; &#160; <span class=\"kw1\">echo<\/span> <span class=\"st0\">&quot;status:<span class=\"es1\">\\n<\/span>&quot;<\/span><span class=\"sy0\">;<\/span>\n&#160; &#160; &#160; &#160; <span class=\"kw1\">if<\/span> <span class=\"br0\">&#40;<\/span><span class=\"re0\">$ret<\/span> <span class=\"sy0\">&gt;<\/span> <span class=\"nu0\">0<\/span><span class=\"br0\">&#41;<\/span> <span class=\"br0\">&#123;<\/span>\n&#160; &#160; &#160; &#160; &#160; &#160; <span class=\"re0\">$exitcode<\/span> <span class=\"sy0\">=<\/span> pcntl_wexitstatus<span class=\"br0\">&#40;<\/span><span class=\"re0\">$status<\/span><span class=\"br0\">&#41;<\/span><span class=\"sy0\">;<\/span>\n&#160; &#160; &#160; &#160; &#160; &#160; <span class=\"kw1\">echo<\/span> <span class=\"st0\">&quot; just exited with status <span class=\"es4\">$exitcode<\/span><span class=\"es1\">\\n<\/span>&quot;<\/span><span class=\"sy0\">;<\/span>\n&#160; &#160; &#160; &#160; &#160; &#160; <span class=\"re0\">$exited<\/span> <span class=\"sy0\">=<\/span> <span class=\"kw4\">true<\/span><span class=\"sy0\">;<\/span>\n&#160; &#160; &#160; &#160; &#160; &#160; <span class=\"kw1\">break<\/span><span class=\"sy0\">;<\/span>\n&#160; &#160; &#160; &#160; <span class=\"br0\">&#125;<\/span> <span class=\"kw1\">else<\/span> <span class=\"kw1\">if<\/span> <span class=\"br0\">&#40;<\/span><span class=\"re0\">$ret<\/span> <span class=\"sy0\">==<\/span> <span class=\"nu0\">0<\/span><span class=\"br0\">&#41;<\/span> <span class=\"br0\">&#123;<\/span>\n&#160; &#160; &#160; &#160; &#160; &#160; <span class=\"kw1\">echo<\/span> <span class=\"st0\">&quot; not exited<span class=\"es1\">\\n<\/span>&quot;<\/span><span class=\"sy0\">;<\/span>\n&#160; &#160; &#160; &#160; <span class=\"br0\">&#125;<\/span> <span class=\"kw1\">else<\/span> <span class=\"br0\">&#123;<\/span>\n&#160; &#160; &#160; &#160; &#160; &#160; <span class=\"co1\">\/\/error<\/span>\n&#160; &#160; &#160; &#160; &#160; &#160; <span class=\"kw1\">echo<\/span> <span class=\"st0\">&quot; error<span class=\"es1\">\\n<\/span>&quot;<\/span><span class=\"sy0\">;<\/span>\n&#160; &#160; &#160; &#160; &#160; &#160; <span class=\"kw1\">break<\/span><span class=\"sy0\">;<\/span>\n&#160; &#160; &#160; &#160; <span class=\"br0\">&#125;<\/span>\n&#160; &#160; <span class=\"br0\">&#125;<\/span> <span class=\"kw1\">while<\/span> <span class=\"br0\">&#40;<\/span><a href=\"http:\/\/www.php.net\/time\"><span class=\"kw3\">time<\/span><\/a><span class=\"br0\">&#40;<\/span><span class=\"br0\">&#41;<\/span> <span class=\"sy0\">&lt;<\/span> <span class=\"re0\">$start<\/span> <span class=\"sy0\">+<\/span> <span class=\"nu0\">3<\/span><span class=\"br0\">&#41;<\/span><span class=\"sy0\">;<\/span>\n&#160; &#160; <span class=\"kw1\">echo<\/span> <span class=\"st0\">&quot;child wait done<span class=\"es1\">\\n<\/span>&quot;<\/span><span class=\"sy0\">;<\/span>\n&#160; &#160; <span class=\"kw1\">if<\/span> <span class=\"br0\">&#40;<\/span><span class=\"sy0\">!<\/span><span class=\"re0\">$exited<\/span><span class=\"br0\">&#41;<\/span> <span class=\"br0\">&#123;<\/span>\n&#160; &#160; &#160; &#160; <span class=\"kw1\">echo<\/span> <span class=\"st0\">&quot;killing<span class=\"es1\">\\n<\/span>&quot;<\/span><span class=\"sy0\">;<\/span>\n&#160; &#160; &#160; &#160; <a href=\"http:\/\/www.php.net\/posix_kill\"><span class=\"kw3\">posix_kill<\/span><\/a><span class=\"br0\">&#40;<\/span><span class=\"re0\">$pid<\/span><span class=\"sy0\">,<\/span> <span class=\"nu0\">9<\/span><span class=\"br0\">&#41;<\/span><span class=\"sy0\">;<\/span>\n&#160; &#160; <span class=\"br0\">&#125;<\/span>\n<span class=\"br0\">&#125;<\/span> <span class=\"kw1\">else<\/span> <span class=\"br0\">&#123;<\/span>\n&#160; &#160; <span class=\"co1\">\/\/ we are the child<\/span>\n&#160; &#160; <span class=\"kw1\">echo<\/span> <span class=\"st0\">&quot;hi this is the child<span class=\"es1\">\\n<\/span>&quot;<\/span><span class=\"sy0\">;<\/span>\n&#160; &#160; <a href=\"http:\/\/www.php.net\/sleep\"><span class=\"kw3\">sleep<\/span><\/a><span class=\"br0\">&#40;<\/span><span class=\"nu0\">5<\/span><span class=\"br0\">&#41;<\/span><span class=\"sy0\">;<\/span>\n&#160; &#160; <span class=\"kw1\">echo<\/span> <span class=\"st0\">&quot;foo<span class=\"es1\">\\n<\/span>&quot;<\/span><span class=\"sy0\">;<\/span>\n&#160; &#160; <a href=\"http:\/\/www.php.net\/exit\"><span class=\"kw3\">exit<\/span><\/a><span class=\"br0\">&#40;<\/span><span class=\"nu0\">2<\/span><span class=\"br0\">&#41;<\/span><span class=\"sy0\">;<\/span>\n<span class=\"br0\">&#125;<\/span>\n&#160;\n<span class=\"sy1\">?&gt;<\/span>\n&#160;<\/pre><\/td><\/tr><\/tbody><\/table><\/div>\n <\/div>\n <div class=\"phork-meta\">\n  <a href=\"https:\/\/p.cweiske.de\/151\/rev-raw\/ce9d6f796f044713ce9922b7fd1e693cba32d6c5\/forktest.php\" style=\"float: right\">view raw source<\/a>\n  <a href=\"https:\/\/p.cweiske.de\/151#forktest.php\">forktest.php<\/a>\n <\/div>\n<\/div>\n<\/div>\n"}