PHP学习笔记--php教科书上关于正则表达式实例代码(摘要)_PHP教程

<?<span php><span><span posix><span>
        <span><span><span>
        <span> = '^[$][[:alpha:]_][[:alnum:]]*'<span><span ereg>(<span>,'$_name',<span>); <span><span>
        <span var_dump>(<span>); <span><span>
        
        <span><span><span>
        <span> = 'tm'<span><span> = 'hello,tm,Tm,tM'<span><span>=<span eregi_replace>(<span>,'TM',<span>); <span><span ereg_replace>
        <span echo> <span><span><span><span><span>
        <span> = 'is'<span><span> = 'This is a register book.'<span><span> = <span spliti>(<span>,<span>); <span><span split>
        <span var_dump>(<span><span><span><span pcre><span>
        <span><span><span>
        <span> = '/d{3,4}-?d{7,8}/'<span><span> = <span array>('043212345678','0431-7654321','12345678'); <span><span>
        <span> = <span preg_grep>(<span>,<span><span><span var_dump>(<span><span><span><span><span>
        <span> = 'This is an example!'<span><span> = '/w{2}/'<span><span> = <span preg_match>(<span>,<span>,<span>); <span><span>
        <span echo> <span>."<br />"<span><span var_dump>(<span><span><span echo> "<br />"<span><span><span>
        <span> = <span preg_match_all>(<span>,<span>,<span><span><span echo> <span>."<br />"<span><span var_dump>(<span><span><span><span><span>
        <span> = '!、$、^、*、+、.、[、]、\、/、b、<、>'<span><span>='b'<span><span><span>
        <span> = <span preg_quote>(<span>,<span><span><span echo> <span><span><span><span><span>
        <span> = '[b]粗体字[/b]'<span><span><span>
        <span> = <span preg_replace>('/[b](.*)[/b]/i','<b>$1</b>',<span><span><span echo> <span><span><span><span><span>
        <span function> c_back(<span><span><span><span>
            <span> = "<font color=<span>[1]><span>[2]</font>"<span><span return> <span><span><span> = '[color=blue]字体蓝色[/color]'<span><span><span preg_replace_callback preg_replace>
        <span echo> <span preg_replace_callback>('/[color=(.*)](.*)[/color]/U',"c_back",<span><span><span><span><span>
        <span><span>
        <span> = "/s+/"; <span><span>
        <span> = "I'm Chinese! I can eat"<span><span> = <span preg_split>(<span>,<span>); <span>
        <span var_dump>(<span><span>?></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>

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