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- What are the methods for encoding PHP database query results?
- The methods for encoding PHP database query results are: 1. HTML entity encoding, which converts special characters into equivalent entity names or numeric codes; 2. URL encoding, which converts special characters into equivalent ASCII strings that can be safely transmitted; 3. Base64 encoding, convert binary data into an ASCII string containing only 64 characters.
- PHP Problem 1660 2023-06-05 15:17:50
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- How to exclude duplicate arrays in PHP
- Methods to exclude duplicate arrays in PHP: 1. Create a PHP sample file; 2. Define the array to be deduplicated as "$oldArr" and the new array after deduplication as "$newArr"; 3. Use "array_unique()" The function removes duplicate elements from the array and returns the deduplicated array. The code is "$newArr = array_unique($oldArr);" to eliminate duplicate elements. 4. Deduplication can also be performed through a for loop.
- PHP Problem 749 2023-06-05 14:53:03
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- Why doesn't sublime work with php?
- Reasons and solutions for sublime not working with PHP: 1. There is no PHP plug-in installed. It is recommended to install a plug-in named "PHP Completions Kit"; 2. Check whether the file type is set correctly and ensure that Sublime recognizes it as a PHP file type; 3. , encoding problem, the PHP file uses some special characters, you can add the "#coding:utf-8" statement in the header of the file or convert the file encoding to UTF-8 without BOM.
- PHP Problem 1360 2023-06-05 15:02:52
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- What are the methods for php to implement jump and carry post data?
- The methods for PHP to implement jumps and carry post data are: 1. Use Session to store POST data in the session, and then request and process it after jumping to the next page; 2. Use the GET method when redirecting and append POST at the same time. Parameters, note that the POST parameters need to be serialized when redirecting, and use the GET method to carry them at the end of the redirect link.
- PHP Problem 1275 2023-06-05 14:18:02
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- How to remove path suffix in php
- How to remove the path suffix in PHP: 1. Get the file name in the URL through the "basename()" function and ignore the ".php" suffix, then use the "dirname()" function to get the directory name of the URL, and finally use the path and Construct a new URL from the file name; 3. Use regular expressions to remove the path suffix. For some specific situations, the flexibility of regular expressions is more suitable.
- PHP Problem 1601 2023-06-07 14:07:14
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- What is the usage of function() in php
- function() in php is a grammatical structure used to define a function. Its usage is: 1. Use the "function" keyword to specify the definition of a new function; 2. Write the parameter list of the function in the "function()" brackets ;3. Write the function body in the curly braces of "function(){}" and end with ";".
- PHP Problem 1995 2023-06-05 13:17:30
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- How to verify that regular expression only has numbers in php
- How to implement regular expression verification with only numbers in PHP: 1. Create a PHP sample file; 2. Create a string variable to be verified as "$num"; 3. Use the if statement to judge and the "preg_match()" function to perform regular expression Expression verification, the syntax is "if(preg_match('/\D/', $num))"; 4. Output the result through "echo".
- PHP Problem 1500 2023-06-05 13:19:37
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- How to use regular matching in php to remove html
- The method for PHP to use regular matching to remove HTML is: 1. Create a PHP sample file; 2. Define the variable $html, which contains HTML tags and text; 3. Use the "preg_replace()" function to replace all HTML tags with spaces. The syntax is: "preg_replace('/(<[^>]+>| |\s+)/u', ' ', $html)"; 4. Use the built-in function "trim()" to remove the leading and trailing spaces in the string, echo and output the result That’s it.
- PHP Problem 1293 2023-06-05 11:44:45
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- Are php methods called in other files?
- The php method can be called in other files. The calling method is: 1. Use the "include" function to include the file, and then use the "function_name()" syntax to call it; 2. Use the "function_name" function to define a name space, and then use the "function_name()" syntax to call it.
- PHP Problem 1380 2023-06-05 11:10:38
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- What is the difference between c language and php
- The difference between C language and PHP is: 1. Type definition and variable declaration methods are different. C language needs to declare all variables in advance, while in PHP you can use undeclared variables at will. C language also needs to specify types for variables, but PHP No; 2. The memory management methods are different. C language needs to manually allocate memory space for each variable, while PHP manages the memory by its own virtual machine.
- PHP Problem 1538 2023-06-05 10:54:58
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- How to log in and jump to pass value in php
- PHP login jump value transfer method: 1. POST value transfer, use the HTML "form" form jump method to post value transfer; 2. GET transfer value, use the <a> tag to jump to xxx.php , obtain the passed value through "$_GET['id']"; 3. SESSION passes the value. Once saved in SESSION, other pages can be obtained through SESSION.
- PHP Problem 1324 2023-06-05 13:15:52
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- What are the ways to implement division and rounding in PHP?
- The methods for implementing division and rounding in PHP are: 1. Use the "intval()" function to perform rounding operations. The syntax is "intval (divisor variable/divisor variable)"; 2. Use the "round()" function to perform rounding. Operation, the syntax is "round (divisor variable / dividend variable)"; 3. Use the "floatdiv()" function to perform floating point operations and use the "intval()" function to round, the syntax is "intval(floatdiv(divisor, dividend) ".
- PHP Problem 2360 2023-06-05 11:07:41
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- How to query to remove not equal to field in php
- How to remove the unequal field in PHP query: 1. Create a PHP sample file; 2. Use "$variable" to define variables; 3. Use the "!=" operator to determine whether the variable is not equal to the required value; 4. Execute "echo" to output the operation result.
- PHP Problem 1105 2023-06-05 10:19:56
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- What does predefinition mean in php
- Predefinition in PHP refers to the built-in constants, variables and functions that are considered globally available. These contents do not need to be specially introduced or declared and exist in the PHP language itself.
- PHP Problem 1894 2023-06-05 14:16:59
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- What is the impact of php not having zendoptimizer?
- The absence of zendoptimizer in PHP may have some impact on performance and functionality: 1. zendoptimizer can decode and execute PHP code compiled with the Zend encoder. Losing it will result in the inability to decode the encoded code, causing the application to fail to work properly; 2. zendoptimizer includes some caching mechanisms that can improve its performance when executing the same piece of PHP code multiple times. Losing it may result in lower performance.
- PHP Problem 1657 2023-06-05 09:55:04
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